11:1 Now Jephthah the Gileadite was a mighty warrior, but he was the son of a prostitute. Gilead was the father of Jephthah. 2 And Gilead's wife also bore him sons. And when his wife's sons grew up, they drove Jephthah out and said to him, “You shall not have an inheritance in our father's house, for you are the son of another woman.” 3 Then Jephthah fled from his brothers and lived in the land of Tob, and worthless fellows collected around Jephthah and went out with him.
4 After a time the Ammonites made war against Israel. 5 And when the Ammonites made war against Israel, the elders of Gilead went to bring Jephthah from the land of Tob. 6 And they said to Jephthah, “Come and be our leader, that we may fight against the Ammonites.” 7 But 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?” 8 And 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.” 9 Jephthah 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.” 10 And the elders of Gilead said to Jephthah, “The Lord will be witness between us, if we do not do as you say.” 11 So 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. (ESV)