Genesis 25:1

XXV.
ABRAHAM’S MARRIAGE WITH KETURAH.

(1) Then again Abraham took a wife. — This rendering implies that Abraham’s marriage with Keturah did not take place until after Sarah’s death; but this, though probable, is far from certain, as the Hebrew simply says, And Abraham added and took a wife. This statement is altogether indefinite; but as Abraham was 137 years of age at Sarah’s death, and lived to be 175, it is quite possible that, left solitary by Isaac’s marriage, he took Keturah to wife, and had by her six sons. The sole objection is his own statement, in Genesis 17:17, that it was a thing beyond nature for a man a hundred years old to have a son; how much more improbable, then, must it have become after forty more years had passed by! The argument on the other side, which would infer that the marriage took place in Sarah’s lifetime, from the fact that the birth of grandchildren is mentioned in Genesis 25:3, has little weight, as their names might have been subsequently added to bring down the genealogy to a later date.

Jewish commentators cut the knot by identifying Keturah with Hagar, who in the meanwhile had, as they say, set an example of matronly virtue in the manner in which she had devoted herself to the bringing up of Ishmael. But in Genesis 25:6 there is an evident allusion to both Hagar and Keturah in the mention of Abraham’s “concubines” in the plural; and in 1 Chronicles 1:32 the children of Keturah are distinguished from Hagar’s one son, Ishmael. To this we must add that as Ishmael was fourteen years old when Isaac was born, he would be now about fifty-four years of age, and his mother have passed the period of life when she could bear six sons.

The position, moreover, of Keturah was entirely distinct from that of Hagar. The latter was Sarah’s representative; and her son, if Sarah had remained barren, would have been the heir. Keturah was a secondary wife, whose children from the first held an inferior position in the household. So Bilhah and Zilpah became the substitutes of Rachel and Leah, and therefore their children ranked side by side with Reuben and Joseph, though not altogether on the same level. They were patriarchs, and the progenitors of tribes, even if the tribes sprung from them held a lower rank.