Abram and Nahor took wives for themselves. The name of Abram’s wife was Sarai (later called Sarah), and the name of Nahor’s wife was Milcah, the daughter of Haran, the father of Milcah and Iscah.

Before Eliezer had finished speaking (praying), Rebekah came out with her [water] jar on her shoulder. Rebekah was the daughter of Bethuel the son of Milcah, who was the wife of Abraham’s brother Nahor.

Nahor

After Terah had lived seventy years, he became the father of Abram and Nahor and Haran [his firstborn].

Then the servant took ten of his master’s camels, and set out, taking some of his master’s good things with him; so he got up and journeyed to Mesopotamia [between the Tigris and the Euphrates Rivers], to the city of Nahor [the home of Abraham’s brother].

The God of Abraham [your father] and the God of Nahor [my father], and the god [the image of worship] of their father [Terah, an idolater], judge between us.” But Jacob swore [only] by [the one true God] the Fear of his father Isaac.

General references

And she said to him, “I am the daughter of Bethuel, Milcah’s son, whom she bore to [her husband] Nahor.”