Divrey Hayamim Bais 20:20

And they rose early in the boker, and went forth into the Midbar Tekoa; and as they went forth, Yehoshaphat stood and said, Hear me, O Yehudah, and ye inhabitants of Yerushalayim. Ha'aminu BaHASHEM Eloheichem (Believe in HASHEM Eloheichem), so shall ye be established; have faith in His Nevi'im, so shall ye be victorious.