Introduction
Milcah is a daughter of Haran and niece of Abraham, who married her uncle Nahor, becoming, through their son Bethuel, the grandmother of Rebekah (who marries Isaac) and Laban (father of Leah and Rachel, who marry Jacob).
Family
Marriage and descendants
Genesis 11:29 records Milcah's marriage to Nahor. A genealogical note in Genesis 22:20-23 lists her children with Nahor, including Bethuel, "the father of Rebekah", explicitly connecting Milcah's line to the wife chosen for Isaac in the following chapters of Genesis.
Significance
Milcah's marriage within the family, and her descendants' continued intermarriage with Abraham's own line (Isaac marrying her granddaughter Rebekah, and Jacob later marrying two more of her descendants, Leah and Rachel), reflects the consistent pattern in Genesis of the covenant family maintaining marriage ties within its own extended kindred rather than with the surrounding Canaanite peoples.