19 God said, "No, but Sarah, your wife, will bear you a son. You shall call his name Isaac.{Isaac means "he laughs."} I will establish my covenant with him for an everlasting covenant for his seed after him.
Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him. Abraham called his son who was born to him, whom Sarah bare to him, Isaac.{Isaac means "He laughs."}
But the angel said to him, "Don't be afraid, Zacharias, because your request has been heard, and your wife, Elizabeth, will bear you a son, and you shall call his name John. You will have joy and gladness; and many will rejoice at his birth. For he will be great in the sight of the Lord, and he will drink no wine nor strong drink. He will be filled with the Holy Spirit, even from his mother's womb. He will turn many of the children of Israel to the Lord, their God. He will go before him in the spirit and power of Elijah, 'to turn the hearts of the fathers to the children,' and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord." Zacharias said to the angel, "How can I be sure of this? For I am an old man, and my wife is well advanced in years." The angel answered him, "I am Gabriel, who stands in the presence of God. I was sent to speak to you, and to bring you this good news. Behold, you will be silent and not able to speak, until the day that these things will happen, because you didn't believe my words, which will be fulfilled in their proper time."
But it is not as though the word of God has come to nothing. For they are not all Israel, that are of Israel. Neither, because they are Abraham's seed, are they all children. But, "In Isaac will your seed be called." That is, it is not the children of the flesh who are children of God, but the children of the promise are counted as a seed. For this is a word of promise, "At the appointed time I will come, and Sarah will have a son."
Now we, brothers, as Isaac was, are children of promise. But as then, he who was born according to the flesh persecuted him who was born according to the Spirit, so also it is now. However what does the Scripture say? "Throw out the handmaid and her son, for the son of the handmaid will not inherit with the son of the free woman." So then, brothers, we are not children of a handmaid, but of the free woman.
He said, "I will certainly return to you when the season comes round. Behold, Sarah your wife will have a son." Sarah heard in the tent door, which was behind him. Now Abraham and Sarah were old, well advanced in age. It had ceased to be with Sarah after the manner of women. Sarah laughed within herself, saying, "After I have grown old will I have pleasure, my lord being old also?" Yahweh said to Abraham, "Why did Sarah laugh, saying, 'Will I really bear a child, yet I am old?' Is anything too hard for Yahweh? At the set time I will return to you, when the season comes round, and Sarah will have a son."
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.