Jephthah, having been born illegitimately, is driven out by his half-brothers and takes up his dwelling in Tob, east of Gilead. "Outlaws collected around Jephthah and went raiding with him." The elders of Gilead ask him to be their leader in the campaign against the Ammonites, but he holds out for a more permanent and a broader position, and the elders agree that, provided Jephthah succeeds in defeating Ammon, he will be their permanent chieftain. On behalf of Israel as a whole and in reliance on the might of God the Judge, Jephthah challenges the Ammonites. Jephthah swears an oath: