David, a young shepherd from Bethlehem, was sent by his father to bring food to his brothers on the battlefield.
Though young and inexperienced in warfare, David had faith in God and remembered how God had protected him from lions and bears.
Goliath, a Philistine champion from Gath, stood over nine feet tall and was heavily armed with sword, spear, and javelin.
For forty days, he challenged Israel to send a champion to fight him, terrifying Saul and the entire Israelite army.
David refused Saul's armor and instead chose five smooth stones from a brook and his shepherd's sling. He declared he came in the name of the Lord of hosts.
When Goliath mocked him, David ran toward him, slung a stone that struck the giant in the forehead, and Goliath fell. David then took Goliath's own sword and killed him.
This victory demonstrates that God's power is not limited by human weakness or conventional weapons. Faith in God can overcome any giant obstacle.