1 Samuel 17:49-50

New Living Translation

⁴⁹ Reaching into his shepherd’s bag and taking out a stone, he hurled it with his sling and hit the Philistine in the forehead. The stone sank in, and Goliath stumbled and fell face down on the ground.

⁵⁰ So David triumphed over the Philistine with only a sling and a stone, for he had no sword.