Rachel's sister, in the Bible (4)
I believe the answer is:
leah
'rachel's sister in the bible' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for leah that I've seen before include "her elder sister" , "She married Jacob" , "First wife of Jacob" , "Jacobs first wife (Gen.29)" , "Hale (anag) - wife of Jacob" .)