17 This chapter contains articles of agreement betwixt the great Jehovah, the father of mercies, and pious Abram, the father of the faithful.Mention was made of this covenant, Gen 15:18.
but here it is particularly drawn up.Here are,

1. The circumstances of the making of this covenant, the time and manner, Gen 17:1.
   and the posture Abram was in, Gen 17:3.
   
2. The covenant itself, in the particular instances.
   1. That he should be the father of many nations, Gen 17:4. Gen 17:6.
      and in token of that his name was changed, Gen 17:5.
      
   2. That God would be a God to him and his seed, and would give them the land of Canaan, Gen 17:7-8.
      and the seal of this part of the covenant was circumcision, Gen 17:9-14.
      
   3. That he should have a son by Sarai, and in token of that her name was changed, Gen 17:15-16.
      This promise Abraham received, Gen 17:17.
      And his request for Ishmael, (Gen 17:18.) was answered abundantly
      to his satisfaction, Gen 17:19-22.
      
3. The circumcision of Abraham and his family, according to God's appointment, Gen 17:23-27.
   

17:1 And when Abram was ninety nine years old - Full thirteen years after the birth of Ishmael. So long the promise of Isaac was deferred;

1. Perhaps to correct Abram's over - hasty marrying ofHagar.
2. That Abram and Sarai being so far striken in age, God's power inthis matter might be the more magnified.

The Lord appeared unto Abram - In some visible display of God's immediate glorious presence with him.And said, I am the Almighty God - By this name he chose to make himself known to Abram, rather than by his name Jehovah, Exo 6:3.He used it to Jacob, Gen 35:11. They called him by this name, Gen 28:5 Gen 43:14, Gen 48:3, . It is the name of God that is mostly usedthroughout the book of Job, at least 30 times in the discourses of that book, in which Jehovah is used but once. After Moses, Jehovah is more frequently used, and this very rarely. I am El - Shaddai. It speaks the almighty power of God, either

1. As an avenger, from wrv he destroyed, or laid waste; so some:and they think God took this title from the destruction of the old world: Or,
2. As a benefactor, v for rva who, and yr it sufficeth.

Our old English translation reads it here, very significantly,I am God All - sufficient. The God with whom we have to do, is self - sufficient; he hath every thing, and he needs not any thing. And he is enough to us, if we be in covenant with him; we have all in him, and we have enough in him; enough to satisfy our most enlarged desires; enough to supply the defect of every thing else, and to secure us happiness for our immortal souls.

But the covenant is mutual, walk before me, and be thou perfect - Thatis, upright and sincere. Observe,

1. That to walk before God, is to set God always before us, and to think,and speak, and act, in every thing as those that are always under his eye.It is to have a constant regard to his word, as our rule, and to his glory, as our end, in all our actions. It is to be inward with him in all the duties of religious worship, and to be entire for him in all holy conversation.
2. That upright walking with God is the condition of our interest in hisall - sufficiency. If we neglect him, or dissemble with him, we forfeit the benefit of our relation to him.
3. A continual regard to God's all - sufficiency will have a great influenceupon our upright walking with him.

17:3 And Abram fell on his face while God talked with him - Either,

1. As one overcome by the brightness of the Divine glory: Daniel andJohn did so likewise. Or.
2. As one ashamed of himself, and blushing to think of the honours doneto one so unworthy. He looks upon himself with humility, and upon God with reverence, and, in token of both, falls on his face.

17:4 The promise is here introduced with solemnity: As for me, saith the Great God, Behold, behold and admire it, behold and be assured of it, my covenant is with thee. And thou shalt be a father of many nations - This implies,

1. That his seed after the flesh should be very numerous, both in Isaacand in Ishmael, and in the sons of Keturah. And the event answered, for there have been, and are, more of the children of men descended from Abraham, than from any one man at equal distance with him from Noah, the common root.
2. That all believers, in every age, should be looked upon as his spiritualseed, as the father of the faithful. In this sense the apostle directs us to understand this promise, Rom 4:16-17. He is the father of those, in every nation, that, by faith, enter into covenant with God, and (as the Jewish writers express it) are gathered under the wings of the divine majesty.

17:5 In token of this, his name was changed from Abram, a high father, to Abraham, the father of a multitude. This was to confirm the faith of Abraham, while he was childless; perhaps even his own name was sometimes an occasion of grief to him; Why should he be called a high father, who was not a father at all? But now God had promised him a numerous issue, and had given him a name which signified so much; that name was his joy.

17:7 And I will establish my covenant - Not to be altered or revoked; not with thee only, then it would die with thee but with thy seed after thee; and it is not only thy seed after the flesh, but thy spiritual seed. It is everlasting in the evangelical meaning of it. The covenant of grace is everlasting; it is from everlasting in the counsels of it, and to everlasting in the consequences of it; and the external administration of it is transmitted, with the seal of it, to the seed of believers, and the internal administration of it by the Spirit to Christ's seed in every age. This is a covenant of exceeding great and precious promises. Here are two which indeed are all - sufficient, that God would be their God. All the privileges of the covenant, all its joys, and all its hopes, are summed up in this. A man needs desire no more than this to make him happy. What God is himself, that he will be to his people: wisdom to guide and counsel them, power to protect and support them, goodness to supply and comfort them; what faithful worshippers can expect from the God they serve, believers shall find in God as theirs. This is enough, yet not all.

17:8 And I will give thee Canaan for an everlasting possession - God had before promised this land to Abraham and his seed, Gen 15:18.But here, it is promised for an everlasting possession, as a type of heaven, that everlasting rest which remains for the people of God. This is that better country to which Abraham had an eye, and the grant of which was that which answered the vast extent of that promise, that God would be to them a God; so that if God had not designed this, he would have been ashamed to be called their God, Heb 11:16. As the land of Canaan was secured to the seed of Abraham, according to the flesh; so heaven is secured to all his spiritual seed for a possession truly everlasting. The offer of this eternal life is made in the word, and confirmed by the sacraments, to all that are under the external administration of the covenant, and the earnest of it is given to all believers.

17:10 The token of the covenant, is circumcision, for the sake of which the covenant is itself called the covenant of circumcision, Act 7:8. It is here said to be thecovenant which Abraham and his seed must keep, as a copy or counterpart, it is called a sign and seal, Rom 4:11, for it was.

1. A confirmation to Abraham and his seed of those promises whichwere God's part of the covenant, assuring them that, in due time, Canaan should be theirs: and the continuance of this ordinance, after Canaan was theirs, intimates, that that promise looked farther, to another Canaan.
2. An obligation upon Abraham and his seed to that duty which wastheir part of the covenant, not only to the duty of accepting the covenants and putting away the corruption of the flesh, which were primarily signified by circumcision, but in general to the observation of all God's commands. They who will have God to be to them a God, must consent to be to him a people.

Now, 1. Circumcision was a bloody ordinance, for all things by the law werepurged with blood, Heb 9:22. See Exo 24:8. But the blood of Christ being shed, all bloody ordinances are now abolished. Circumcision therefore gives way to baptism. 2. It was peculiar to the males, though the women also were included in thecovenant. 3. Christ having not yet offered himself for us, God would have man toenter into covenant, by the offering of some part of his own body, and no part could be better spared. 4. The ordinance was to be administered to children when they were eightdays old, that they might gather some strength to be able to undergo the pain of it. 5. The children of the strangers were to be circumcised, which lookedfavourable upon the Gentiles, who should, in due time be brought into the family of Abraham, by faith. Here is, (1.) The promise made to Abraham of a son by Sarai, thatson in whom the promise made to him should be fulfilled, that he should be the father of many nations, for she also shall be a mother of nations, and kings of people shall be of her, Gen 17:16.Note,

1. God reveals the purposes of his good - will to his people by degrees. Godhad told Abraham long before, that he should have a son, but never 'till now that he should have a son by Sarai.
2. The blessing of the Lord makes fruitful, and adds no sorrow with it;no such sorrow as was in Hagar's case. I will bless her, with the blessing of fruitfulness, and then thou shalt have a son of her.
3. Civil government and order is a great blessing to the church. It ispromised not only that people, but kings of people should be of her; not a headless rout, but a well modelled, well governed society.

17:15 Sarah shall her name be - The same letter is added to her name that was to Abraham's. Sarai signifies my princess, as if her honour were confined to one family only: Sarah signifies a princess, viz. of multitudes.

17:17 Then Abraham fell on his face, and laughed - It was a laughter of delight, not of distrust. Now it was that Abraham rejoiced to see Christ's day, now he saw it and was glad, Joh 8:56, for as he saw heaven in the promise of Canaan, so he saw Christ in the promise of Isaac, and said, Shall a child be born to him that is an hundred years old? - He doth not here speak of it, as at all doubtful, for we are sure he staggered not at the promise, Rom 4:20, but as wonderful, and that which could not be effected but by the almighty power of God.

17:18 And Abraham said, O that Ishmael might live before thee! - This he speaks nor as desiring that Ishmael might be preferred before the son he should have by Sarah, but as dreading lest he should be forsaken of God, he puts up this petition on his behalf. The great thing we should desire of God, for our children, is, that they may live before him, that is, that they may be kept in covenant with him, and may have grace to walk before him in their uprightness. God's answer to this prayer, is an answer of peace. Abraham could not say he sought God's face in vain.

17:20 As for Ishmael, I have heard thee; I have blessed him - That is, I have many blessings in store for him.

1. His posterity shall be numerous; I will multiply him exceedingly;
2. They shall be considerable; twelve princes shall he beget.We may charitably hope that spiritual blessings also were bestowed upon him, though the visible church was not brought out of his loins.

17:21 He names that child, Isaac - Laughter, because Abraham rejoiced in spirit when this son was promised him.