1Ch 1:34 | KD | STEP | The two sons of Isaac. Isaac has been already mentioned as a son of Abram, along with Ishmael, in 1Ch 1:28. But here the continuation of the genealogy of Abraham is prefaced by the remark that Abraham begat Isaac, just as in , 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 ( ) have been derived from Gen 25, already in itself so probable, becomes a certainty.

‏ 1 Chronicles 1:34

The two sons of Isaac. Isaac has been already mentioned as a son of Abram, along with Ishmael, in 1Ch 1:28. But here the continuation of the genealogy of Abraham is prefaced by the remark that Abraham begat Isaac, just as in Gen 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 (1Ch 1:28-33) have been derived from Gen 25, already in itself so probable, becomes a certainty.