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.
Gilead's wife had children with him, and as they grew up, they removed Jephthah. They told him that he wouldn't inherit their father's property because he was born from another woman who wasn't their mother.