15 And God said, As for Sarai, your wife, from now her name will be not Sarai, but Sarah.
16 And I will give her a blessing so that you will have a son by her: truly my blessing will be on her, and she will be the mother of nations: kings of peoples will be her offspring.
17 Then Abraham went down on his face, and laughing, said in his heart, May a man a hundred years old have a child? will Sarah, at ninety years old, give birth?
18 And Abraham said to God, If only Ishmael's life might be your care!
19 And God said, Not so; but Sarah, your wife, will have a son, and you will give him the name Isaac, and I will make my agreement with him for ever and with his seed after him.
Worthy.Bible » Commentaries » Matthew Henry Commentary » Commentary on Genesis 17
Commentary on Genesis 17 Matthew Henry Commentary
Chapter 17
This chapter contains articles of agreement covenanted and concluded upon between the great Jehovah, the Father of mercies, on the one part, and pious Abram, the father of the faithful, on the other part. Abram is therefore called "the friend of God,' not only because he was the man of his counsel, but because he was the man of his covenant; both these secrets were with him. Mention was made of this covenant (ch. 15:18), but here it is particularly drawn up, and put into the form of a covenant, that Abram might have strong consolation. Here are,
Gen 17:1-3
Here is,
Gen 17:4-6
The promise here is introduced with solemnity: "As for me,' says the great God, "behold, behold and admire it, behold and be assured of it, my covenant is with thee;' as before (v. 2), I will make my covenant. Note, The covenant of grace is a covenant of God's own making; this he glories in (as for me), and so may we. Now here,
Gen 17:7-14
Here is,
Gen 17:15-22
Here is,
Gen 17:23-27
We have here Abraham's obedience to the law of circumcision. He himself and all his family were circumcised, so receiving the token of the covenant and distinguishing themselves from other families, that had no part nor lot in the matter.