Judges 11:7-11

7But Jephthah said to the elders of Gilead, "Did you not hate me and drive me out of my father's house? Why have you come to me now when you are in distress?"

8And the elders of Gilead said to Jephthah, "That is why we have turned to you now, that you may go with us and fight against the Ammonites and be our head over all the inhabitants of Gilead."

9Jephthah said to the elders of Gilead, "If you bring me home again to fight against the Ammonites, and the Lord gives them over to me, I will be your head."

10And the elders of Gilead said to Jephthah, "The Lord will be witness between us, if we do not do as you say."

11So Jephthah went with the elders of Gilead, and the people made him head and leader over them. And Jephthah spoke all his words before the Lord at Mizpah.