2 And Sarah became with child, and gave Abraham a son when he was old, at the time named by God.
Because it is in the Writings, that Abraham had two sons, one by the servant-woman, and one by the free woman.
And by faith Sarah herself had power to give birth, when she was very old, because she had faith in him who gave his word;
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.
And he said, I will certainly come back to you in the spring, and Sarah your wife will have a son. And his words came to the ears of Sarah who was at the back of the tent-door.
And he made with him the agreement of which circumcision was the sign. And so Abraham had a son, Isaac, and gave him circumcision on the eighth day; and Isaac had a son, Jacob, and Jacob was the father of the twelve heads of the families of Israel.
And Elisha said, At this time in the coming year you will have a son in your arms. And she said, No, my lord, O man of God, do not say what is false to your servant. Then the woman became with child and gave birth to a son at the time named, in the year after, as Elisha had said to her.
Even now Elisabeth, who is of your family, is to be a mother, though she is old: and this is the sixth month with her who was without children.
Worthy.Bible » Commentaries » Matthew Henry Commentary » Commentary on Genesis 21
Commentary on Genesis 21 Matthew Henry Commentary
Chapter 21
In this chapter we have,
Gen 21:1-8
Long-looked-for comes at last. The vision concerning the promised seed is for an appointed time, and now, at the end, it speaks, and does not lie; few under the Old Testament were brought into the world with such expectation as Isaac was, not for the sake of any great person eminence at which he was to arrive, but because he was to be, in this very thin, a type of Christ, that seed which the holy God had so long promised and holy men so long expected. In this account of the first days of Isaac we may observe,
Gen 21:9-13
The casting out of Ishmael is here considered of, and resolved on.
Gen 21:14-21
Here is,
Gen 21:22-32
We have here an account of the treaty between Abimelech and Abraham, in which appears the accomplishment of that promise (ch. 12:2) that God would make his name great. His friendship is valued, is courted, though a stranger, though a tenant at will to the Canaanites and Perizzites.
Gen 21:33-34
Observe,