Who Was Rebekah to Abraham? Her Family Line
Rebekah was Abraham's great-niece: the daughter of Bethuel, son of Nahor and Milcah, and Nahor was Abraham's brother. The passage names her lineage twice, then shows her generosity answering the servant's prayer.
Who Was Rebekah's Father? Genesis 24:15
Genesis 24:15 identifies Rebekah's father as Bethuel, the son of Milcah and Nahor, which makes Rebekah Abraham's great-niece. The verse states her parentage plainly before describing her arrival at the spring.