1st Samuel 17:48,49 - So it was when the Philistine arose and came and drew near to meet David, that David hurried and ran toward the army to meet the Philistine.  Then Davi put his hand in his bag and took out a stone; and he slung it and struck the Philistine in his forehead, so that the stone sank into his forehead, and he fell on his face to the earth.