1 Samuel 17:48-50

The Voice

⁴⁸ When the Philistine stood up and approached, David ran toward the line of battle to meet him. ⁴⁹ As quick as a flash, he reached into his bag, put a stone in his sling, and launched it at the Philistine, hitting him in the head. The stone sank deeply into his forehead, and the Philistine fell face-first onto the ground.

⁵⁰ That was how David defeated the Philistine with only a sling and a single stone, striking him down, ending his life without a sword in his hand.