Judges 11:2

And Gilead’s wife bare him sons; and his wife’s sons grew up, and they thrust out Jephthah, and said unto him, Thou shalt not inherit in our father’s house; for thou art the son of a strange woman.

Cross-reference

Judges 11:1 identifies Jephthah as a 'mighty warrior' son of a prostitute — explaining why his half-brothers drove him out in verse 2.

Deuteronomy 23:2 excludes offspring of forbidden unions from the assembly — relates to Jephthah's illegitimate birth and expulsion.