1 Chronicles 1:32-33 -

Contain the list of Abraham's sons by Keturah, here called one of his concubines; but in Genesis, "a wife," and apparently not taken by Abraham till after Sarah's death ( Genesis 25:1-4 ). The sons are six; the grandsons, two by the son placed second in order, and five by the son placed fourth in order; in all thirteen names. But the passage in Genesis gives also three great-grandsons, through the second grandson. All the thirteen are in the Authorized Version identical in the two places and in the Hebrew text; but in the Septuagint slight differences occur, as Zembram, Iexan, Madam, Sobak, Soe, Daidan, Sabai, Opher, Abida , and Eldada here, for Zombran, Iezan, Madal, Iesbok, Soie, Dedan, Saba, Apheir, Abeida, and Eldaga there. It is carefully stated in Genesis 25:5 , Genesis 25:6 , after the enumeration of Keturah's children, and in spite of her having been called "wife" in the first verse, that "Abraham gave all that he had unto Isaac. But unto the sons of the concubines, which Abraham had, Abraham gave gifts, and sent them away from Isaac his sou, while he yet lived, eastward, unto the east country."