Then, as the Philistine walked toward David to fight and kill him, David hurried and ran toward the army of the Philistines to meet Goliath. He put his hand in his shepherd's bag and took out one of the smooth stones. He put the stone in his sling and quickly slung it. It struck the giant Philistine and sank into his forehead, and he fell on his face to the earth. Then David ran and stood over Goliath, pulled the Philistine's sword out of its sheath, and cut his head off with it.
So David prevailed over the giant Goliath with a sling and a stone, which killed him. And when the Philistines saw that their champion was dead, they began running away, leaving their tents with all their belongings behind. And the men of Israel and Judah ran after them and chased them out of the valley, but returned and plundered their tents.
David loved God and believed that He would keep him safe. And so the Israelites overcame their enemies and all the earth knew that there was a God in Israel!