1 Samuel 17:45-50 AMPC
Then said David to the Philistine, You come to me with a sword, a spear, and a javelin, but I come to you in the name of the Lord of hosts, the God of the ranks of Israel, Whom you have defied.
This day the Lord will deliver you into my hand, and I will smite you and cut off your head. And I will give the corpses of the army of the Philistines this day to the birds of the air and the wild beasts of the earth, that all the earth may know that there is a God in Israel.
And all this assembly shall know that the Lord saves not with sword and spear; for the battle is the Lord's, and He will give you into our hands.
When the Philistine came forward to meet David, David ran quickly toward the battle line to meet the Philistine.
David put his hand into his bag and took out a stone and slung it, and it struck the Philistine, sinking into his forehead, and he fell on his face to the earth.
So David prevailed over the Philistine with a sling and with a stone, and struck down the Philistine and slew him. But no sword was in David's hand.
AMPC: Amplified Bible, Classic Edition