1 Samuel 17:48-50

Revised Standard Version

⁴⁸ When the Philistine arose and came and drew near to meet David, David ran quickly toward the battle line to meet the Philistine. ⁴⁹ And David put his hand in his bag and took out a stone, and slung it, and struck the Philistine on his forehead; the stone sank into his forehead, and he fell on his face to the ground.

⁵⁰ So David prevailed over the Philistine with a sling and with a stone, and struck the Philistine, and killed him; there was no sword in the hand of David.