Jephthah (Hebrew: יִפְתָּח, Modern: Yiftach, Tiberian: Yip̄tāḥ, lit. "he will open") is a figure described in the Hebrew Bible as a judge of the ancient Israelites. His story is recounted in the Book of Judges, chapters 11 and 12. Jephthah is introduced as a mighty warrior and a son of Gilead by a prostitute, who was driven out by his half-brothers. Despite his questionable lineage, the elders of Gilead later seek Jephthah's help to fight against the Ammonites. He agrees but demands to be made their leader, which they accept. Jephthah's leadership and the controversial vow he makes to God before battle, which results in the sacrifice of his daughter, are central to his narrative. In Islamic tradition, Jephthah is known as Yiftah (Arabic: يفتاح) and is also mentioned in the Quran.