1 Samuel 17:50 in the King James Version
So David prevailed over the Philistine with a sling and with a stone, and smote the Philistine, and slew him; but there was no sword in the hand of David.
Context
49 David put his hand in his bag, took a stone and slung it, and struck the Philistine in his forehead. The stone sank into his forehead, and he fell on his face to the earth.
50 So David prevailed over the Philistine with a sling and with a stone, and struck the Philistine and killed him; but there was no sword in David’s hand.
51 Then David ran, stood over the Philistine, took his sword, drew it out of its sheath, killed him, and cut off his head with it. When the Philistines saw that their champion was dead, they fled.