Heb 11:32-33

In the Old Testament, Jephthah was able to defeat the enemy because he believed in God and the Christ to come.

Judg 11:29 Then the Spirit of the Lord came upon Jephthah, and he passed over Gilead, and Manasseh, and passed over Mizpeh of Gilead, and from Mizpeh of Gilead he passed over unto the children of Ammon.

Heb 11:32 And what shall I more say? for the time would fail me to tell of Gedeon, and of Barak, and of Samson, and of Jephthae; of David also, and Samuel, and of the prophets: 33 Who through faith subdued kingdoms, wrought righteousness, obtained promises, stopped the mouths of lions.