David said to the Philistine, "You come against me with sword and spear and javelin,1 but I come against you in the name2 of the LORD Almighty, the God of the armies of Israel, whom you have defied.3
References for 1 Samuel 17:45
This day the LORD will hand4 you over to me, and I'll strike you down and cut off your head. Today I will give the carcasses5 of the Philistine army to the birds of the air and the beasts of the earth, and the whole world6 will know that there is a God in Israel.7
References for 1 Samuel 17:46
All those gathered here will know that it is not by sword8 or spear that the LORD saves;9 for the battle10 is the LORD's, and he will give all of you into our hands."
References for 1 Samuel 17:47
As the Philistine moved closer to attack him, David ran quickly toward the battle line to meet him.
Reaching into his bag and taking out a stone, he slung it and struck the Philistine on the forehead. The stone sank into his forehead, and he fell facedown on the ground.
So David triumphed over the Philistine with a sling11 and a stone; without a sword in his hand he struck down the Philistine and killed him.
References for 1 Samuel 17:50