Judges 11:1-6

Now Jephthah the Gileadite was a mighty man of valor, and he was the son of a harlot: and Gilead begat Jephthah. And Gilead’s wife bare him sons; and when his wife’s sons grew up, they drove out Jephthah, and said unto him, Thou shalt not inherit in our father’s house; for thou art the son of another woman. Then Jephthah fled from his brethren, and dwelt in the land of Tob: and there were gathered vain fellows to Jephthah, and they went out with him. And it came to pass after a while, that the children of Ammon made war against Israel. And it was so, that, when the children of Ammon made war against Israel, the elders of Gilead went to fetch Jephthah out of the land of Tob; and they said unto Jephthah, Come and be our chief, that we may fight with the children of Ammon.