Genesis 17:18–21

Genesis 17:18 · Darby

And Abraham said to God, Oh that Ishmael might live before thee!

Abraham has just heard that Sarah, at ninety, will bear the son of promise. His first words back to God name a different son. The plea is short, warm, and natural, and it raises a hard question. What does a believer do when God's plan overturns the plan he has already built?

What "live before You" asks for

The plea asks for more than survival. One writer notes that when God speaks of life, He means more than breath:

"Life" and "living" in Scripture, when God uses it, is not always the thought of mere life; as, "Oh, that Ishmael might live before You." It is divine favour also.

Modernised from J. N. DarbyOriginal wording

He wants God's favour to rest on Ishmael.

Why Abraham asked

God has just renamed Sarai as Sarah, mother of nations and kings. If God can do that with two people as good as dead, Abraham's reasoning almost writes itself:

But he had received such favour, and his heart went out to the child of the slave woman. He said to God, "Oh, that Ishmael might live before You!" Sarai was now to be Sarah. She was to become nations, with kings coming from her, though he and she were no better than dead. So why should Ishmael not share the covenant? But no: the child of promise and of the free woman is the one with whom God establishes His covenant. For Abraham's sake Ishmael does not go without His blessing; he fathers twelve princes and becomes a great nation. So the reasonings of a saint fall, and God's will alone stands, even in blessing outside the covenant of promise.

Modernised from William KellyOriginal wording

The hope that the flesh can please God

Ishmael was Abraham's son by the slave woman, born after the flesh. To ask God to bless him is more than sentiment. Many people share the same instinct:

Abraham's thoughts return to his son born after the flesh, and he pleads with God, "Oh that Ishmael might live before You" (v. 18). This is the same lingering hope that occupies the thoughts of many people — that the flesh might be brought to please God. But Scripture declares the opposite: "those who are in the flesh cannot please God" (Romans 8:8).

Modernised from L. M. GrantOriginal wording

An outward mark on an unchanged nature

Ishmael did receive circumcision, the sign of the covenant. It settled nothing about him:

Abraham's heart yearned over Ishmael. More than that, Ishmael received circumcision, so he carried the mark of the covenant outwardly (Gen. 17:18, 25). It was all useless, however. This word had gone out about him: "He will be a wild man; his hand will be against every man, and every man's hand against him." A wild, unmanageable and quarrelsome fellow he remained. His time of testing ended when he proved himself not only wild, but a despiser and a mocker of Isaac, the promised son, who is a picture of Christ. Then came the word, "Cast out this slave woman with her son, for the son of this slave woman shall not be heir with my son Isaac" (Gen. 21:10).

Modernised from F. B. HoleOriginal wording

God's answer: heard, blessed, but not the heir

God does reply, "As for Ishmael, I have heard you" (v. 20). One writer sees in that answer what happens when a believer pleads to keep something God has set aside:

What a moment for the soul! Have there not been such awakenings in God's saints at times? Moments when everything that had delighted the eye was fading away, and the heart cried out: "Oh that Ishmael might live before You!" Must it all go, then? Is there no remnant of former days to spare?... God may pity the soul in this — though it is not His purpose. He may say, as it were, "And as for Ishmael, I have heard you." He may spare the link and bless it in an earthly way. But it never enters the divine path: "But I will establish my covenant with Isaac."

Modernised from F. G. PattersonOriginal wording

The courage of the prayer itself

Not every writer reads the verse as a failure. One sees in it a soul that has come back to God and speaks to Him freely:

This is a fine, earnest path for the spirit of a saint. There is a deep reality here. Departure from God proves itself to be bitterness. But God proves Himself to the soul to be restoration and peace. Under His gracious hand faith grows bold again. Abraham presses his plea, with the vigour he had in chapter 15, and asks God that Ishmael might live before Him.

Modernised from J. G. BellettOriginal wording

So commentators differ. Some stress how God overturns the reasoning of nature. Others stress the freedom of a restored heart pouring itself out to God.

Summary

- Asks — "Live before You" is a plea for God's favour to rest on Ishmael, not just for him to survive.

- Reasons — Abraham's logic makes sense. But God fixes the covenant on the son of promise, and a saint's reasonings fall before God's will.

- Flesh — Behind the plea lies a lingering hope: that the flesh can please God. Scripture says it cannot.

- Marks — Ishmael carried the outward sign of the covenant and stayed exactly what he was. An outward mark changes no nature, and in the end he was cast out.

- Heard — God pities the plea and blesses Ishmael on earth. Yet the link never enters the divine path. God establishes His covenant with Isaac.

Genesis 17:19 · Darby

And God said, Sarah thy wife shall indeed bear thee a son; and thou shalt call his name Isaac; and I will establish my covenant with him, for an everlasting covenant for his seed after him.

Abraham had just asked for less. He wanted Ishmael, the son already born, to be the son of the covenant. Instead God fixes the covenant on a child who does not yet exist, names him before birth, and sets a date for his arrival.

God's "No" to Abraham's plea

Abraham had a son already, and his heart went out to him. One writer sees a common instinct in that prayer: the hope that what we produce ourselves can please God.

Abraham's thoughts go back to his son born after the flesh, and he pleads with God, "Oh that Ishmael might live before You!" (v. 18). Many people still hold that same lingering hope — that the flesh can be brought to please God. But scripture declares the opposite, "those who are in the flesh cannot please God" (Romans 8:8).

Modernised from Leslie M. GrantOriginal wording

Ishmael blessed, but outside the covenant

This refusal does not reject Ishmael. He receives real blessing — just not the covenant. What God sets aside is Abraham's reasoning about how the blessing should run.

Sarai was now to be Sarah. She would become nations, and kings would come from her, even though she and Abraham were as good as dead. So why should Ishmael not share the covenant? But no: the child of promise, the son of the free woman, is the one with whom God establishes His covenant. For Abraham's sake Ishmael does not go without God's blessing — he fathers twelve princes and becomes a great nation... So the reasoning of a believer falls, and God's will alone stands, even in blessing outside the covenant of promise.

Modernised from William KellyOriginal wording

Why the promise waited until they were past hope

Abraham is ninety-nine. Sarah is ninety. The timing is no accident. God speaks after all natural strength is gone.

But when Abraham was ninety-nine years old, there was no hope of a child by natural means. His body was now dead. Then God reveals Himself to him by His name: "I am God Almighty."

Modernised from J. N. DarbyOriginal wording

One writer draws out the principle behind this. God ties the covenant to the son only His power could give, not to the son nature could produce.

All of this was called "God's covenant" with him. That again tells us plainly that God's purpose, or secret, or covenant, rested on resurrection. It rested on setting aside the flesh with all its strength and resources, and on doing something beyond and above nature... And so Isaac is born out of the dead bodies of Abraham and Sarah. God's covenant is with Isaac. Ishmael may be blessed — and he is — but the covenant is with Isaac, and with Isaac alone.

Modernised from J. G. BellettOriginal wording

The name God chose

God names the child before his mother conceives him. The name means "laughter." It picks up how both parents reacted, and it also points ahead.

Isaac, "laughter," recalls the laughter of both his parents in view of his birth, and suggests that joy which the coming of the true Son brings.

Modernised from Samuel RidoutOriginal wording

One writer reads Abraham's own laugh as faith, not doubt. He heard an impossible promise and laughed.

See how Abraham acted. God made a covenant of blessing with him, and told him He would bless him with this child of promise... As he heard God's promises, he laughed to himself and said in his heart, "Shall a child be born to a man who is a hundred years old? Shall Sarah, who is ninety years old, bear a child?"... His laugh was the LAUGH OF FAITH.

Modernised from A. J. PollockOriginal wording

"An everlasting covenant"

The word "everlasting" carries weight here. This covenant does not depend on how the people who receive it behave.

It is the covenant God made with Abraham. It was unconditional, not in the least conditional on the obedience of Israel. He affirmed the same covenant again to Isaac (Gen. 26:4), and confirmed it to Jacob (Gen. 28:13-14), despite Jacob's wandering away. It was an everlasting covenant, and so it depends only on the faithfulness of God.

Modernised from L. M. GrantOriginal wording

Isaac and the greater Son

One writer looks past the family line here. Isaac pictures Christ, and the way he came pictures how Christ is given to us.

But God's covenant He would establish with Isaac (v. 21), a clear type of the Lord Jesus. Sarah, a picture of God's grace, would bring him to Abraham, just as the grace of God brings Christ to the believing sinner today. Isaac would be born one year from the time God spoke to Abraham. Abraham had to wait that much longer, with time to think about God's promise. That promise was completely sure, but no one could rush it ahead of God's time.

Modernised from L. M. GrantOriginal wording

Summary

- Refused — Abraham asked God to work with the son he already had. God said no: "those who are in the flesh cannot please God."

- Given — the son of the covenant had to be one nature could not produce, born "out of the dead bodies of Abraham and Sarah."

- Named — God named him "laughter" before he was even conceived. The name hints at "that joy which the coming of the true Son brings."

- Guaranteed — the covenant is everlasting. It carries no conditions and rests only on "the faithfulness of God."

- Pointing — Ishmael is truly blessed, but the covenant runs through Isaac alone, "a clear type of the Lord Jesus."

Genesis 17:20 · Darby

And for Ishmael I have heard thee behold, I will bless him, and will make him fruitful, and will very greatly multiply him; twelve princes shall he beget, and I will make him a great nation.

Abraham had just asked God to let Ishmael live before Him. God's reply grants blessing, fruitfulness, twelve princes and a great nation — but not the covenant.

The plea God answered

God does not brush aside what Abraham asked. One writer sees a moment many believers know. Something long loved is slipping away, and the heart pleads for it.

Have there not been such awakenings in God's people at times? Moments when everything that had delighted the eye was fading away, and the heart cried out: "Oh, that Ishmael might live before You!" Must it all go then? Is there no remnant of former days that may be spared? Has it all been a mistake?… God may pity the soul in this — though it is not His purpose. He may say, as it were: "And as for Ishmael, I have heard you." God may spare the tie and bless it in an earthly way. But it never enters the path that is divine: "But I will establish My covenant with Isaac."

Modernised from F. G. PattersonOriginal wording

The name that means "God hears"

The words "I have heard you" reach back to the boy's name. God gave that name to his mother Hagar before he was born.

The angel of the Lord appeared to Hagar and told her to return to her mistress. Her offspring would be beyond number, and she was to call her son's name Ishmael, which means "El shall hear."… Abraham prayed that Ishmael might live before God, but Ishmael stands as a picture of the seed of Abraham according to the flesh. So God answered: He would bless Ishmael, multiply him greatly, and make him a great nation, and Ishmael would father twelve princes. Yet He would establish the covenant with Isaac.

Modernised from Morrish Bible DictionaryOriginal wording

Blessed, but not an heir

Abraham had reasoned his way to a request: let Ishmael share the covenant. The answer sets his reasoning aside, yet it does not leave Ishmael without kindness.

But no: God establishes His covenant with the child of promise, the son of the free woman. Yet Ishmael, for Abraham's sake, does not go without His blessing. He fathers twelve princes and becomes a great nation… So the reasonings of a saint fall to the ground. God's will alone stands, even in blessing outside the covenant of promise. Even there, no flesh will boast in His presence.

Modernised from William KellyOriginal wording

Blessing and inheritance are not the same thing. The difference is not about love.

Ishmael does not belong to this chapter, but he is blessed in it as a son of Abraham, and so loved; yet he is no co-heir. That cannot be — all that comes from a higher source.

Modernised from J. N. DarbyOriginal wording

The promise and its fulfilment

The promise here concerns natural things, and Scripture records where it came true.

God answered the request about Ishmael and promised to bless him in natural things, making him a great nation under twelve princes. Genesis 25:12-16 records the fulfilment.

Modernised from F. B. HoleOriginal wording

Twelve princes, and a future not forgotten

The number twelve is no accident, and these names appear again later in Scripture.

The names we find here can be traced in other Scriptures. For instance, Isaiah 60, the great chapter of the millennial kingdom, mentions Nebaioth and Kedar (verse 7). The number twelve, twelve princes, links Ishmael closely with Israel. In the future God will bless Israel and give it the promised land as a glorious possession. Then Ishmael's descendants will not be forgotten.

Modernised from Arno C. GaebeleinOriginal wording

What Ishmael pictures

Commentators differ here. Some see Ishmael as a picture of Israel's unbelieving majority:

The unbelieving mass of the nation are children of Abraham according to the flesh; but only the believing remnant are the true seed according to promise. Still, even the children according to the flesh would be great on the earth.

Modernised from Hamilton SmithOriginal wording

Others see a picture of life under law:

Being the son of a slave woman, Ishmael pictures those under the bondage of law, living in a desert that produces no fruit for God.

Modernised from L. M. GrantOriginal wording

Summary

- Heard — Abraham's plea was not ignored. God begins His answer by saying He has heard, and the boy's very name means that God hears.

- Given — What God grants is real: fruitfulness, twelve princes, a great nation. It is blessing in natural things.

- Withheld — Blessing is not covenant. Ishmael is loved as Abraham's son, yet he is not a co-heir; the promise runs through Isaac alone.

- Corrected — Abraham's reasoning falls, and God's will stands. Nothing here rests on what the flesh can produce.

- Remembered — Genesis 25 records the twelve princes. Writers point to Isaiah 60: Ishmael's line is not forgotten in the day God blesses Israel.

Genesis 17:21 · Darby

But my covenant will I establish with Isaac, whom Sarah shall bear to thee at this appointed time in the next year.

God's reply here closes a conversation Abraham started by pointing to the son he already had. Abraham had asked that Ishmael might live before God. God had just promised a son by Sarah. This verse settles which son the covenant runs through, and when he will arrive.

God's Will, Not Abraham's Suggestion

Abraham's plea made sense by human logic. He and Sarah were as good as dead, and a living son already stood in front of him.

Abraham, who had received such favour, felt for the child of the slave woman. He said to God, "Oh, that Ishmael might live before you!" Sarai was from now on to be Sarah. She was to become nations, with kings coming from her, though he and she were no better than dead. So why should Ishmael not share the covenant? But no. God establishes His covenant with the child of promise, the son of the free woman. Ishmael, for Abraham's sake, does not go without His blessing: he fathers twelve princes and becomes a great nation… So the reasonings of a believer fall, and God's will alone stands, even in blessing outside the covenant of promise.

Modernised from William KellyOriginal wording

Loved, Yet Not a Co-Heir

Ishmael is not shut out of the chapter or out of love. What he cannot be is a joint heir.

Ishmael does not belong to this chapter, but he is blessed in it as a son of Abraham, and so loved. He is no co-heir. That cannot be. All of it flows from a higher source.

Modernised from J. N. DarbyOriginal wording

The Prayer That Wants to Keep Ishmael

God's reply has two halves. He hears Abraham about Ishmael, but He keeps the covenant for Isaac. Many believers know that pattern: God spares what is dear, yet does not build on it.

What a moment for the soul! Have there not been such awakenings in God's saints at times? Moments when everything the eye loved was fading away, and the heart cried out: "Oh that Ishmael might live before you!" Must everything go then? Is there no remnant of former days that God may spare? Has it all been a mistake? God may pity the soul in this — though not His purpose. He may say, as it were: "And as for Ishmael, I have heard you." The link may be spared and blessed in an earthly way. But it never enters the path which is divine: "But I will establish my covenant with Isaac."

Modernised from F. G. PattersonOriginal wording

Why Romans 9 Goes Back to This Verse

Romans 9 picks up these words about Sarah and her son. They prove that descent from Abraham settles nothing by itself.

He appeals first to the history of Abraham. If the Jew insists on natural descent, he must let the Arabians into blessing too. They descended from Abraham through Ishmael (Gen. 25:12-18). Natural descent is therefore shut out. With Isaac we see the blessing secured on the principle of sovereign electing grace, for the word is, "Through Isaac shall your offspring be named." Ishmael was the child of flesh, but Isaac was the child of promise. That this promise came by sovereign grace is plain from the word, "About this time next year I will return, and Sarah shall have a son."

Modernised from Hamilton SmithOriginal wording

One writer sees Ishmael as a picture of a wider group.

From Romans 9:6-9, it would seem that Ishmael sets forth the unbelieving mass of Israel… The unbelieving mass are children of Abraham by natural descent. Only the believing remnant are the true seed by promise. Still, even the children by natural descent would be great on the earth.

Modernised from Hamilton SmithOriginal wording

A Date on the Calendar

God names the son, and He also names the date.

But God's covenant He would establish with Isaac (v. 21), a clear picture of the Lord Jesus. Sarah, a picture of God's grace, would bring Isaac to Abraham, just as the grace of God brings Christ to the believing sinner today. Isaac would be born one year from the time God spoke to Abraham. Abraham had to wait that much longer. He had time to think about God's promise. It was completely sure, but it would not come ahead of God's time.

Modernised from L. M. GrantOriginal wording

One older translation reads "at this appointed time in the next year." That set time runs on through Scripture.

God set a time when the promised son was born to Abraham. In the same way, He had an appointed time to give His own Son: "when the fullness of time had come, God sent forth His Son." There is also a set time when God will bring the First-Begotten into the world again, at His second coming. Then it will be the set time for Israel too, when God remembers His promises and visits and does all that He has spoken concerning them. "You will arise and have pity on Zion; it is the time to favour her; the appointed time has come" (Psalm 102:13).

Modernised from Arno Clemens GaebeleinOriginal wording

Summary

- Covenant. God alone fixes the line of promise; Abraham's proposal for Ishmael falls, and God's will stands.

- Blessing. God hears Ishmael, loves him and makes him a great nation — real blessing, but outside the covenant.

- Heir. Only the child of promise inherits. Natural descent settles nothing, or the Arabians would inherit too.

- Heart. Every believer meets a moment when God spares and blesses the Ishmael he pleads for, yet keeps him off the divine path.

- Timing. The promise carries a date. The God who kept "this time next year" also kept the fullness of time. He will keep the set time still to come.