Judges 11:8-9
11:8 The leaders of Gilead said to Jephthah, “That may be true, but now we pledge to you our loyalty. Come with us and fight with the Ammonites. Then you will become the leader of all who live in Gilead.”
11:9 Jephthah said to the leaders of Gilead, “All right! If you take me back to fight with the Ammonites and the Lord gives them to me, I will be your leader.”