1 Samuel 17

45 Then said David to the Philistine, Thou comest to me with a sword, and with a spear, and with a javelin: but I come to thee in the name of the LORD of hosts, the God of the armies of Israel, which thou hast defied. 46 This day will the LORD deliver thee into mine hand; and I will smite thee, and take thine head from off thee; and I will give the carcases of the host of the Philistines this day unto the fowls of the air, and to the wild beasts of the earth; that all the earth may know that there is a God in Israel: 47 and that all this assembly may know that the LORD saveth not with sword and spear: for the battle is the LORD’S, and he will give you into our hand.