Diḇre haYamim Bĕt (2 Chronicles) 20:15

and he said, “Listen, all Yehuḏah, and you inhabitants of Yerushalayim, and Sovereign Yehoshaphat! Thus said יהוה to you, ‘Do not fear, nor be afraid of the face of this great army, for the battle is not yours, but Elohim’s.