The two sons of Isaac. Isaac has been already mentioned as a son of Abram, along with Ishmael, in 1 Chronicles 1:28. But here the continuation of the genealogy of Abraham is prefaced by the remark that Abraham begat Isaac, just as in Genesis 25:19, where the begetting of Isaac the son of Abraham is introduced with the same remark. Hence the supposition that the registers of the posterity of Abraham by Hagar and Keturah (1 Chronicles 1:28-33) have been derived from Genesis 25, already in itself so probable, becomes a certainty.

And Abraham begat Isaac. The sons of Isaac; Esau and Israel.

1Ch 1:34-42. Posterity of Abraham by Esau.

28-54 The genealogy is from hence confined to the posterity of Abraham. Let us take occasion from reading these lists of names, to think of the multitudes that have gone through this world, have done their parts in it, and then quitted it. As one generation, even of sinful men, passes away, another comes. Ec 1:4; Nu 32:14, and will do so while the earth remains. Short is our passage through time into eternity. May we be distinguished as the Lord's people.