Bilhah

Faltering; bashful, Rachel’s handmaid, whom she gave to Jacob (Gen. 29:29). She was the mother of Dan and Naphtali (Gen. 30:3-8). Reuben was cursed by his father for committing adultry with her (35:22; 49:4). He was deprived of the birth-right, which was given to the sons of Joseph.

M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition