Judges 11:10-11, 29-31

They said, “GOD is witness between us; whatever you say, we’ll do.” Jephthah went along with the elders of Gilead. The people made him their top man and general. And Jephthah repeated what he had said before GOD at Mizpah.

GOD’s Spirit came upon Jephthah. He went across Gilead and Manasseh, went through Mizpah of Gilead, and from there approached the Ammonites. Jephthah made a vow before GOD: “If you give me a clear victory over the Ammonites, then I’ll give to GOD whatever comes out of the door of my house to meet me when I return in one piece from among the Ammonites—I’ll offer it up in a sacrificial burnt offering.”