Milcah was the daughter of Haran and married her uncle Nahor, Abraham's brother. She became a matriarch of an important branch of the patriarchs' family, and her granddaughter Rebekah later became Isaac's wife. Through her, the family ties between Abraham's line and his brother's line were preserved.
Milcah is first mentioned as the daughter of Haran and the wife of Nahor, Abraham's brother. This establishes the important family relationships in Terah's lineage.
29Abram and Nahor both took wives. Abram's wife was named Sarai, and Nahor's wife was named Milcah, the daughter of Haran, who was the father of Milcah and Iscah.
31Terah took his son Abram, his grandson Lot son of Haran, and his daughter-in-law Sarai, the wife of his son Abram, and together they set out from Ur of the Chaldeans to go to the land of Canaan. But when they came to Haran, they settled there.
Milcah bore eight sons to Nahor, including Bethuel who became the father of Rebekah and Laban. This made her a matriarch for an important part of the patriarchs' lineage.
Through her son Bethuel, Milcah became the grandmother of Rebekah, who was chosen to become Isaac's wife. This linked Abraham's line back to his brother's family.
15Before he had finished speaking, there came Rebekah, the daughter of Bethuel son of Milcah, who was the wife of Abraham's brother Nahor. She had her jar on her shoulder.
47Then I asked her, 'Whose daughter are you?' She said, 'The daughter of Bethuel son of Nahor, whom Milcah bore to him.' So I put the ring in her nose and the bracelets on her wrists,