And Abram and Nahor took them wives (cf. Genesis 6:2): the name of Abram's wife was Sarai. "My princess," from sarah, to rule (Gesenius, Lange); "Strife" (Kalisch, Murphy): "Jah is ruler" (Furst). The LXX.
write σάρα, changing afterwards to Σαῤῥα to correspond with Sarah. That Sarai was Iscah has been inferred from Genesis 20:12; but, though receiving apparent sanction from verse 31, this opinion "is not supported by any solid argument" (Rosenmüller).
And the name of Nahor's wife, Milcah (Queen, or Counsel), the daughter of Haran, i.e. Nahor's niece. Marriage with a half-sister or a niece was afterwards forbidden by the Mosaic code (Le Genesis 18:9, Genesis 18:14).
The father of Milcah, and the father of Iscah, whose name "Seer" may have been introduced into the narrative like that of Naamah (Genesis 4:22), as that of an eminent lady connected with the family (Murphy).
Ewald's hypothesis, that Iscah was Lot's wife, is pure conjecture.