Divrey Hayamim Bais 20:15

Orthodox Jewish Bible

¹⁵ And he said, Pay heed ye, all Yehudah, and ye inhabitants of Yerushalayim, and thou Melech Yehoshaphat. Thus saith Hashem unto you: Be not afraid nor dismayed by reason of this great multitude; for the milchamah is not yours, but that of Elohim.