1 Samuel 17:49-51

Lexham English Bible

⁴⁹ Then David put his hand into the bag and took a stone from it and slung it. He struck the Philistine on his forehead, and the stone sank into his forehead, and he fell on his face to the ground. ⁵⁰ So David prevailed over the Philistine with the sling and with the stone, and he struck down the Philistine and killed him, but there was no sword in David’s hand.

⁵¹ Then David ran and stood over the Philistine and took his sword and drew it from its sheath and killed him and cut off his head with it. When the Philistines saw that their champion was dead, they fled.