Well, the story goes like this. There's this huge Goliath from the Philistines. He's all big and intimidating. The Israelites are kind of scared. Then comes David, just a young shepherd boy. But he's got this unwavering belief in God. He steps up to fight Goliath. He doesn't rely on the typical weapons. His sling and a few stones are his tools. And with great skill and God's help, he manages to defeat Goliath in that epic battle and becomes a hero for the Israelites.
In the original story, David, a young shepherd, faces Goliath, a giant Philistine warrior. Goliath challenges the Israelites to send out a champion to fight him. David, with his faith in God, volunteers. He refuses the king's armor and instead uses his sling and stones. He then hits Goliath in the head with a stone, knocking him down, and finally cuts off Goliath's head with his own sword, winning a great victory for the Israelites.