171 When Abram was ninety-nine years old, the Lord appeared to him and said, "I am El-Shaddai-'God Almighty.' Serve me faithfully and live a blameless life. 2 I will make a covenant with you, by which I will guarantee to give you countless descendants." 3 At this, Abram fell face down on the ground. Then God said to him,
4 "This is my covenant with you: I will make you the father of a multitude of nations! 5 What's more, I am changing your name. It will no longer be Abram. Instead, you will be called Abraham, for you will be the father of many nations. 6 I will make you extremely fruitful. Your descendants will become many nations, and kings will be among them!
7 "I will confirm my covenant with you and your descendants after you, from generation to generation. This is the everlasting covenant: I will always be your God and the God of your descendants after you. 8 And I will give the entire land of Canaan, where you now live as a foreigner, to you and your descendants. It will be their possession forever, and I will be their God."
Matthew Henry's Commentary on Genesis 17:1-8
Commentary on Genesis 17:1-6
(Read Genesis 17:1-6)
The covenant was to be accomplished in due time. The promised Seed was Christ, and Christians in him. And all who are of faith are blessed with faithful Abram, being partakers of the same covenant blessings. In token of this covenant his name was changed from Abram, "a high father," to Abraham, "the father of a multitude." All that the Christian world enjoys, it is indebted for to Abraham and his Seed.
Commentary on Genesis 17:7-14
(Read Genesis 17:7-14)
The covenant of grace is from everlasting in the counsels of it, and to everlasting in the consequences of it. The token of the covenant was circumcision. It is here said to be the covenant which Abraham and his seed must keep. Those who will have the Lord to be to them a God, must resolve to be to him a people. Not only Abraham and Isaac, and his posterity by Isaac, were to be circumcised, but also Ishmael and the bond-servants. It sealed not only the covenant of the land of Canaan to Isaac's posterity, but of heaven, through Christ, to the whole church of God. The outward sign is for the visible church; the inward seal of the Spirit is peculiar to those whom God knows to be believers, and he alone can know them. The religious observance of this institution was required, under a very severe penalty. It is dangerous to make light of Divine institutions, and to live in the neglect of them. The covenant in question was one that involved great blessings for the world in all future ages. Even the blessedness of Abraham himself, and all the rewards conferred upon him, were for Christ's sake. Abraham was justified, as we have seen, not by his own righteousness, but by faith in the promised Messiah.