Genesis 17: El Shaddai and the Renaming

Genesis 17 picks up thirteen years after Genesis 16 ended. Abram is now ninety-nine years old. Ishmael is thirteen. The household has been living, presumably, with the assumption that Ishmael is the promised heir. The promise of Genesis 15 (“the one who comes out of you will be your heir”) has been satisfied, in their reading, by Hagar’s son. The chapter is going to undo that assumption.

God appears to Abram again, after the longest divine silence in the patriarchal narrative. He identifies himself with a new name (El Shaddai, “God Almighty”), expands the covenant, gives Abram and Sarai new names, institutes circumcision as the covenant’s bodily sign, and announces that the heir will come, specifically and explicitly, from Sarai. The chapter ends with Abram circumcising every male in his household the same day, including himself and Ishmael.

The renaming is the quiet theological core of the chapter. Abram (“exalted father”) becomes Abraham (“father of a multitude”). Sarai (“my princess”) becomes Sarah (“princess”). The change in each case is small, almost imperceptible in the Hebrew. But the small change carries a redirection of identity: the names now bind the bearers to a covenant role, not just a personal designation. From this chapter forward, the patriarch is not Abram alone; he is Abraham, the father of a multitude that does not yet exist.

The chapter is also Abraham’s first recorded laughter. When God tells him Sarah will bear a son, “Abraham fell on his face, and laughed” (verse 17). The laugh is the seed of the name Isaac (Yitzchaq, “he laughs”). The promise has become absurd by every standard except God’s. Abraham’s response is to fall on his face and laugh. Not in unbelief, exactly; not in faith, simply; but in the ground-shaking recognition that a hundred-year-old man and a ninety-year-old woman are about to have a child. The chapter’s laughter is the laughter of impossibility being announced into a household that had stopped expecting it.

A · Genesis 17:1–8 · El Shaddai and the renamed covenant

¹ When Abram was ninety-nine years old, the LORD appeared to Abram and said to him, “I am God Almighty; walk before me, and be blameless. ² And I will make my covenant between me and you, and will make you exceedingly numerous.” ³ Then Abram fell on his face, and God spoke with him, saying, ⁴ “As for me, this is my covenant with you: You shall be the ancestor of a multitude of nations. ⁵ No longer shall your name be Abram, but your name shall be Abraham, for I have made you the ancestor of a multitude of nations. ⁶ I will make you exceedingly fruitful, and I will make nations of you, and kings shall come from you. ⁷ I will establish my covenant between me and you, and your offspring after you throughout their generations, for an everlasting covenant, to be God to you and to your offspring after you. ⁸ And I will give to you, and to your offspring after you, the land where you are now an alien, all the land of Canaan, for a perpetual holding; and I will be their God.” (Genesis 17:1–8, NRSVue)

The chapter opens with a chronological note: Abram is ninety-nine. Genesis 16:16 told us he was eighty-six when Ishmael was born. Thirteen years have passed in narrative silence. We do not know what happened in those thirteen years. The text simply lets the time pass. The covenant carrier has been waiting; the household has presumably settled into a rhythm of life with Ishmael as the heir; and into that long silence, Yahweh appears.
“I am El Shaddai.” This is the first time in Scripture this divine name is used. It will recur throughout the patriarchal narratives (Genesis 28:3, 35:11, 43:14, 48:3, 49:25) and elsewhere. The traditional translation is “God Almighty,” but the etymology is uncertain. Some scholars connect Shaddai to the Akkadian šadû, meaning “mountain,” giving “God of the mountain.” Others connect it to a root meaning “to be sufficient” or “to nurture.” Others still link it to shadayim, the Hebrew word for “breasts,” which would yield something like “God who provides,” “God of the nurturing breast.” The Septuagint usually translates it as pantokrator (“all-powerful”), which is where “Almighty” comes from. The name’s exact meaning is one of those biblical mysteries that never fully resolves. What we can say is that Shaddai is the divine name particularly associated with the patriarchs and especially with the giving of fertility and offspring.

Word study: El Shaddai (אֵל שַׁדַּי), “God Almighty / God of the Mountain / Sufficient God”

The compound name pairs El (“God”) with Shaddai, a term whose etymology has been debated for over two thousand years. The traditional rendering “Almighty” comes from the Septuagint and the Vulgate. Modern scholarly proposals include “God of the Mountain” (from Akkadian šadû), “God Sufficient” (from Hebrew day, “enough”), and “God of the Breast / Nurturer” (from shadayim). What the patriarchal narratives do clearly establish is that this is the name God uses when speaking to Abraham, Isaac, and Jacob about fertility and offspring: the giving of children, the multiplication of descendants, the producing of the covenant family from bodies that should not be able to produce them. El Shaddai is the God who makes barren households fruitful.

Influence callout: Tim Mackie

Mackie reads the El Shaddai designation as the chapter’s opening theological move. The God who is about to make a ninety-nine-year-old man and a ninety-year-old woman fertile is the same God who, according to the name, has always been associated with covenantal fertility against the odds. The name fits the situation. The chapter is not just announcing a son; it is re-announcing what kind of God this is. The God who summoned Abram out of Ur is the same God who can summon a child out of bodies that have, biologically, given up.

“Walk before me, and be blameless” (verse 1). The Hebrew is hithallech lefanai ve-heyeh tamim. Hithallech is the same verb used for Enoch (Genesis 5:22, 24) and Noah (Genesis 6:9), each of whom is described as having “walked with God.” The verb means “walk back and forth, walk continuously, walk as a way of life.” It is the verb of covenant fellowship, the verb of being daily present to God. Tamim means “complete, whole, blameless.” It is later used of unblemished sacrificial animals in Leviticus. The command is not “be perfect” in a moral sense; it is “be whole, undivided, fully present.” The covenant relationship requires Abraham’s whole self to walk in front of God, day in and day out. The covenant is not transactional; it is a way of living.
Abram falls on his face (verse 3) and God speaks again. The renaming arrives in verse 5: “No longer shall your name be Abram, but your name shall be Abraham.” The Hebrew name Avram can be parsed as av (“father”) + ram (“exalted”), giving “exalted father.” Avraham is av hamon (“father of a multitude”), with an extra Hebrew letter (hey) inserted into the name, the same letter that is part of the divine name Yahweh. The change is small in spelling and large in meaning. The name Avram described who he was; the name Avraham describes what God will make him.

Word study: Avram → Avraham

Avram (אַבְרָם) means roughly “exalted father.” Avraham (אַבְרָהָם) is interpreted by the text as “father of a multitude” (av hamon). The grammatical justification for this etymology is contested by scholars (the form would be expected to be av hamon, not avraham), and some commentators treat the name change as a folk etymology rather than a strict philological derivation. What is undisputed is that the hey letter inserted into the name pulls the patriarch’s name into proximity with the divine name Yahweh, which itself contains the hey. The renaming binds Abraham’s identity to God’s, in the consonants of his own name, for the rest of his life.

Influence callout: Ray Vander Laan

Vander Laan teaches the Hebrew renaming traditions with attention to how identity worked in the ANE. To rename a person was to assign them a new vocation. Pharaoh renames Joseph in Genesis 41; Nebuchadnezzar renames Daniel and his friends in Daniel 1; Jesus renames Simon as Peter. The renaming is always a power move and a calling move at once. In Genesis 17, the rename comes from God, and the new name describes a future Abraham has not yet lived. Every time he hears his name, he will be reminded that God called him a father of a multitude before he had a child by Sarah. The name is a daily, liturgical reorientation.

The covenant content of verses 7 and 8 carries the theological weight of the chapter. “I will establish my covenant between me and you, and your offspring after you throughout their generations, for an everlasting covenant” (verse 7). The phrase “everlasting covenant” (berit olam) names the permanence of what God is doing. This is not a contract that will lapse with Abraham’s death. It is a multigenerational, perpetual binding. The land grant that follows (“the land where you are now an alien, all the land of Canaan, for a perpetual holding”) is the geographic anchor for that perpetuity.

Influence callout: N.T. Wright

Wright presses the phrase “to be God to you and to your offspring after you” (verse 7) as the most theologically loaded clause in the patriarchal narratives. God is not just giving Abraham land and offspring. God is committing to being God in a particular way, in a particular family, for the long arc of history. The phrase will recur in Exodus 6:7 (“I will take you as my own people, and I will be your God”), in Jeremiah 31:33 (the new covenant), and in Revelation 21:3 (“they will be his peoples, and God himself will be with them as their God”). The line in Genesis 17:7 is the seed of the entire biblical covenant tradition. To read it carefully is to hear the gospel-in-advance.

B · Genesis 17:9–14 · Circumcision as covenant sign

⁹ As for you, you must keep my covenant, you and your offspring after you throughout their generations. ¹⁰ This is my covenant, which you shall keep, between me and you and your offspring after you: Every male among you shall be circumcised. ¹¹ You shall circumcise the flesh of your foreskins, and it shall be a sign of the covenant between me and you. ¹² He who is eight days old shall be circumcised among you, every male throughout your generations, he who is born in the house, or bought with money from any foreigner who is not of your offspring. ¹³ He who is born in your house, and he who is bought with your money, must be circumcised. My covenant shall be in your flesh for an everlasting covenant. ¹⁴ The uncircumcised male who is not circumcised in the flesh of his foreskin, that soul shall be cut off from his people. He has broken my covenant.” (Genesis 17:9–14, World English Bible)

The covenant requires a sign in the body. Genesis 9 had given Noah a sign in the sky (the rainbow). Genesis 17 gives Abraham a sign in the flesh. The bow was God’s sign to himself, requiring nothing of Noah. Circumcision is a sign in Abraham’s body, and Abraham is required to do it. The covenant deepens by becoming embodied.
ANE context is helpful here. Circumcision was practiced in several surrounding cultures (Egyptian priestly classes, some Semitic peoples). It was not unique to Israel. What was distinctive about Israelite circumcision was its meaning: every male child, eight days after birth, marked in the flesh as a member of God’s covenant community. Egyptian circumcision, by contrast, was selective and linked to ritual purity in the priestly caste; it did not function as the universal marker of an entire people’s covenant identity.

Influence callout: John Walton

Walton’s ANE work helps locate circumcision in its time. The practice was already known in surrounding cultures; what Genesis 17 does is theologize it. By taking a familiar cultural practice and assigning it covenantal meaning, the patriarchal narratives use the body to embed the covenant in a way that cannot be lost or stolen. You can leave your land. You can lose your wealth. You can forget your stories. You cannot un-circumcise. The mark is permanent; the covenant becomes literally inscribed.

“Eight days old” (verse 12). The eighth day has been read by various interpreters as the moment when, in ANE understanding, a newborn was considered to have established a stable life. Modern medicine has noted that vitamin K levels and clotting factors in newborns peak around the eighth day, which has been used in some contexts to argue for the medical wisdom of the timing. Whatever the explanation, the eighth day becomes the canonical moment of covenant entry. Every Jewish boy, throughout subsequent biblical history, will enter the covenant on day eight.
The circumcision is required of “every male, born in the house or bought with money from any foreigner” (verse 12). The covenant sign is not limited to Abraham’s biological children. It includes anyone in the household: servants, foreigners, members by purchase or by birth. This is theologically striking. The covenant community is, from the very beginning, broader than the bloodline. Anyone living under Abraham’s roof, even non-Israelites by ethnicity, are circumcised into the covenant. The covenant is family-shaped but not blood-restricted.

Pushback note

A common reading of circumcision in Christian theology has been to treat it as a primarily ethnic marker that separated Israel from the nations. The text doesn’t quite say that. Verse 12 explicitly includes foreigners purchased into the household. The covenant sign was not a marker of Jewish ethnicity in the modern sense; it was a marker of household membership in a family that was ethnically diverse from the start. Paul will later argue (in Galatians and Romans) that the inclusion of the nations into Abraham’s family was always part of the plan, not a New Testament innovation. Genesis 17:12 is a textual root for that argument. The covenant was always meant to include people who were not biologically Abrahamic.

The penalty for non-circumcision (verse 14): “That soul shall be cut off from his people.” The Hebrew phrase karet, “cut off,” is one of the strongest covenantal sanctions in the Hebrew Bible. It can mean expulsion from the community, premature death, or removal from the covenant promises. The wordplay is also notable: a man who refuses to be cut in the flesh is cut off from the people. The integrity of the covenant is held by the integrity of the sign.

C · Genesis 17:15–22 · Sarah’s renaming, Isaac’s promise, Abraham’s laughter

¹⁵ God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but her name shall be Sarah. ¹⁶ I will bless her, and moreover I will give you a son by her. Yes, I will bless her, and she will be a mother of nations. Kings of peoples will come from her.” ¹⁷ Then Abraham fell on his face, and laughed, and said in his heart, “Will a child be born to him who is one hundred years old? Will Sarah, who is ninety years old, give birth?” ¹⁸ Abraham said to God, “Oh that Ishmael might live before you!” ¹⁹ God said, “No, but Sarah, your wife, will bear you a son. You shall call his name Isaac. I will establish my covenant with him for an everlasting covenant for his offspring after him. ²⁰ As for Ishmael, I have heard you. Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly. He will become the father of twelve princes, and I will make him a great nation. ²¹ But I will establish my covenant with Isaac, whom Sarah will bear to you at this set time next year.” ²² When he finished talking with him, God went up from Abraham. (Genesis 17:15–22, World English Bible)

Sarai is renamed Sarah (verse 15). The Hebrew change is even smaller than Abraham’s. Sarai (שָׂרַי) and Sarah (שָׂרָה) both mean “princess” or “noblewoman,” with Sarai possibly carrying a possessive sense (“my princess”) and Sarah the more general sense. The rabbinic reading is that Sarai was a princess of one household, but Sarah will be a princess of nations. The renaming brings her into the same trajectory as Abraham: from a personal designation to a covenantal vocation.

Word study: Sarai → Sarah

Both names share the root sarar, meaning “to rule” or “to be a princess.” Sarai (שָׂרַי) takes a final yod, which can carry a possessive meaning (“my princess”). Sarah (שָׂרָה) takes a final hey, the same letter inserted into Abraham’s name. The renaming is in parallel: Abraham gets a hey, Sarah gets a hey. The matched insertion ties their identities together in the covenant.

The covenant promise is now extended explicitly to Sarah for the first time (verse 16). Until now, the covenant has been promised to Abraham’s offspring, with Sarai mostly implied. Genesis 17 makes her central. “I will bless her… she will be a mother of nations. Kings of peoples will come from her.” The promise about kings is striking. The covenant family will produce royalty; the eventual line of David will be a fulfillment.

Influence callout: Walter Brueggemann

Brueggemann reads the explicit inclusion of Sarah here as the chapter’s quiet feminist correction. The covenant has been spoken in masculine forms for sixteen chapters. The matriarch has been named, present, and complicit in the family’s choices, but the promise has been delivered to her husband in language that named only him. Verse 16 changes that. The covenant goes through her body, her bloodline, her royalty. The chapter that expands the covenant to include household servants in circumcision also expands the covenant to name the matriarch as a co-promised carrier. The inclusion is fragile and partial; the chapter still treats Abraham as the primary recipient. But Brueggemann’s note is right: this is the verse where Sarah is named into the covenant in a way she had not been before.

Verse 17 contains Abraham’s first recorded laughter. “Abraham fell on his face, and laughed.” The Hebrew vayitzchaq is the verb form of the name Yitzchaq, Isaac. The laugh is the seed of the child’s name. The promise has reached the absurd. Abraham, ninety-nine, lying on his face after a divine encounter, laughs at the idea that he and his ninety-year-old wife are going to have a child.
The laughter is theologically interesting because the text does not condemn it. Compare it with Sarah’s laughter in Genesis 18:12, which appears to be more skeptical and which the text records and gently confronts. Abraham’s laughter here, by contrast, is met with no rebuke. He simply says in his heart, “Will a child be born to him who is one hundred years old? Will Sarah, who is ninety years old, give birth?” The questions are not unbelief; they are the questions of a man trying to absorb what he has been told. The laugh is the bodily response to receiving an impossible word.

Word study: yitzchaq / Isaac (יִצְחָק), “he laughs”

The Hebrew name Yitzchaq is the imperfect form of the verb tzachaq, meaning “to laugh.” The name is given because of the laughter that surrounds the child’s coming. Abraham laughs in chapter 17 (the announcement). Sarah laughs in chapter 18 (the visit). Sarah names her own laughter at the birth in chapter 21:6 (“God has made laughter for me”). The name Isaac carries the family’s recurring response to a promise that was, by every standard, unbelievable. The boy will, for the rest of his life, be named for the response his impending birth produced. The name is a permanent record that the covenant comes by laughter and not by leverage.

Verse 18 is one of the chapter’s most pastoral moments. “Abraham said to God, ‘Oh that Ishmael might live before you!’” Abraham, hearing that Sarah will bear a son, immediately advocates for the son he already has. He is not pleading for Ishmael’s life in a literal sense; the Hebrew yichyeh lefanecha, “live before you,” is the same construction used in 17:1 of Abraham himself (“walk before me”). Abraham is asking that Ishmael, too, be brought into a covenant walk with God. The thirteen-year-old who has been the household’s heir is, in his father’s heart, still the son Abraham wants God to bless.

Influence callout: Brian Zahnd

Zahnd reads Abraham’s intercession for Ishmael as one of the chapter’s most pastoral notes. The covenant carrier, having just heard that the chosen line will be narrowed away from his existing son, does not simply accept the narrowing. He intercedes. He asks God to bless the boy who is being theologically demoted in the same conversation. The chapter records this intercession without judgment, and God responds with a blessing for Ishmael that is its own kind of covenant. Zahnd’s broader reading of the patriarchal narratives names this kind of moment as a model: when God’s narrative singles out one line, the people of God should still pray for the lines that are not singled out. The covenant family is supposed to remain pastorally responsible for those it does not include in its central calling.

God’s response (verses 19 to 21) is patient and clarifying. The covenant will be established with Isaac, the son Sarah will bear, “at this set time next year” (the first specific time-marker for the promise’s fulfillment). But Ishmael will also be blessed: “I have heard you. Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly. He will become the father of twelve princes, and I will make him a great nation.” The blessing of Ishmael mirrors, in scale and language, the blessing that has been given to Abraham. Twelve princes is the same number as the eventual twelve tribes of Israel. The two lines will run in parallel through history, both blessed, both significant, both descended from the patriarch.

Pushback note

A common evangelical reading of this passage treats Ishmael’s blessing as a consolation prize and Isaac’s covenant as the “real” promise. The text doesn’t quite say that. Ishmael’s blessing is real. He becomes a great nation. The covenant family from which Christ comes is the line of Isaac, but the line of Ishmael is also under God’s care, also fruitful, also father of princes. The chapter’s structure is not “Isaac wins, Ishmael loses.” It is “the covenant family will run through Isaac, and the parallel family of Ishmael will be blessed in its own right.” Reading these as zero-sum is reading the text against its own grain.

D · Genesis 17:23–27 · The same-day obedience

²³ Abraham took Ishmael his son, all who were born in his house, and all who were bought with his money: every male among the men of Abraham’s house, and circumcised the flesh of their foreskin in the same day, as God had said to him. ²⁴ Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin. ²⁵ Ishmael, his son, was thirteen years old when he was circumcised in the flesh of his foreskin. ²⁶ In the same day both Abraham and Ishmael, his son, were circumcised. ²⁷ All the men of his house, those born in the house, and those bought with money from a foreigner, were circumcised with him. (Genesis 17:23–27, World English Bible)

A cluster of bedouin tents on a low ridge at the close of day with lamp-light spilling from one tent flap, evoking the same-day household obedience at the close of Genesis 17

The chapter ends with one of the most underread paragraphs in Genesis. Abraham, the day of the divine encounter, circumcises every male in his household: himself at ninety-nine, Ishmael at thirteen, every man born in the household, every man purchased into it. The Hebrew phrase ba-yom ha-zeh (“in the same day”) appears three times in five verses. The narrator is hammering the timing. Whatever the divine encounter said to do, Abraham did, that day.
The contrast with the rest of the patriarchal narrative is striking. Abram has been characterized by hesitation, complicity, workarounds, fear-driven deceptions. The man who lied to Pharaoh in chapter 12 and who let Hagar be mistreated in chapter 16 is the same man who, in chapter 17, performs immediate, complete, painful obedience the same day God commands it. The chapter shows what a covenant carrier looks like when he is finally aligned with the covenant. The integration is not finished; it will keep being tested. But the alignment of chapter 17 is real.

Influence callout: Ray Vander Laan

Vander Laan teaches the same-day obedience as the chapter’s narrative climax. The covenant is no longer just promised; it is enacted in the bodies of the household members in a way that cannot be undone. Every man in the household now carries, in his body, a permanent mark of belonging to this God. The covenant has moved from the mind to the body, from the promise to the practice. Vander Laan often presses the embodied character of biblical covenant: it is not just believed; it is lived in flesh and time and pain and obedience. Genesis 17:23 to 27 is the chapter’s quiet insistence that the patriarchal covenant has become real in the bodies of those who carry it.

Ishmael is included. Verse 25 names him explicitly: “Ishmael, his son, was thirteen years old when he was circumcised.” Even though the chapter has just announced that the covenant will be established with Isaac, Ishmael is still circumcised, still part of the household covenant sign. The narrative is keeping its earlier promise: Ishmael may not be the chosen heir, but he is still loved, still included in the household’s covenant practice, still part of the family Abraham is shaping. The chapter’s pastoral edge holds. Abraham does not abandon Ishmael in his obedience; he brings Ishmael along.
The chapter ends quietly. No fanfare, no celebration. Just a household that has done what it was told to do, the same day, complete and intact. The next chapter will open with Abraham sitting at the entrance of his tent in the heat of the day, and three visitors approaching. But chapter 17 closes with the quiet of obedience finished. The patriarchal household is now, body and soul, a covenant household.

Reflection prompts

The chapter’s renaming is small in spelling and large in meaning. Abram becomes Abraham; Sarai becomes Sarah. Each name carries a hey that pulls the bearer’s identity into proximity with God’s. What name has God been quietly inserting into your life, the small change that reorients who you are toward who God is making you? Are you living into it, or out of the older name?
Abraham hears that the covenant heir will not be Ishmael, and his first response is to advocate for Ishmael. The covenant family is supposed to pray for those it does not formally include. Who, in your life, is being narrowed out of a calling you thought you’d share with them? What does it look like to intercede for them rather than to grasp the calling alone?
The chapter ends with same-day obedience. After thirteen years of silence, when God speaks, Abraham does the thing the same day. Where in your life is there a long silence that has produced postponement, and what is the same-day action God is asking of you when the next clear word arrives?