And Jephthah made a vow to the LORD, and said, "If You will indeed deliver the people of Ammon into my hands,
Judges 11:30
Surrounding context
11:29 Then the Spirit of the LORD came upon Jephthah, and he passed through Gilead and Manasseh, and passed through Mizpah of Gilead; and from Mizpah of Gilead he advanced toward the people of Ammon.
11:30 And Jephthah made a vow to the LORD, and said, "If You will indeed deliver the people of Ammon into my hands,
11:31 then it will be that whatever comes out of the doors of my house to meet me, when I return in peace from the people of Ammon, shall surely be the LORD's, and I will offer it up as a burnt offering."