1 Samuel 17:49-50

BSB(i) 49 Then David reached into his bag, took out a stone, and slung it, striking the Philistine on the forehead. The stone sank into his forehead, and he fell facedown on the ground. 50 Thus David prevailed over the Philistine with a sling and a stone; without a sword in his hand he struck down the Philistine and killed him.