1 Samuel 17:46-47

46This day the LORD will deliver you into my hand. This day I will strike you down, cut off your head, and give the carcasses of the Philistine army to the birds of the air and the creatures of the earth. Then the whole world will know that there is a God in Israel. 47And all those assembled here will know that it is not by sword or spear that the LORD saves; for the battle is the LORD’s, and He will give all of you into our hands.”