The name Bilhah in the Bible
Bilhah is one of four arch-mothers of Israel (Genesis 29:29). She is Rachel"s maiden and mother of Dan and Naphtali. Reuben, son of Jacob and Leah, copulates with her, and forfeits his status of first-born (Genesis 35:22; 49:3-4).
Bilhah is also the name of a town of Simeon (1 Chronicles 4:29), which is perhaps the same as the town named בעלה (Baalah) in Joshua 15:29, בלה (Balah) in Joshua 19:3 and בעלי יהודה (Baale-judah) in 2 Samuel 6:2
Etymology of the name Bilhah
The name Bilhah is spelled identical to (albeit pronounced slightly different as) the feminine noun בלהה (ballaha), meaning terror or calamity, from the root-verb בלה (balah II), meaning to trouble:
BDB Theological Dictionary pronounces the etymology of our name dubious and does not offer a possible meaning. Jones' Dictionary of Old Testament Proper Names proposes Timidity. NOBSE Study Bible Name List reads Foolish.