The Philistine came on and drew near to David, with his shield-bearer in front of him. When the Philistine looked and saw David, he disdained him, for he was only a youth, ruddy and handsome in appearance. The Philistine said to David, “Am I a dog, that you come to me with sticks?” And the Philistine cursed David by his gods. The Philistine said to David, “Come to me, and I will give your flesh to the birds of the air and to the wild animals of the field.” But David said to the Philistine, “You come to me with sword and spear and javelin; but I come to you in the name of the Lord of hosts, the God of the armies of Israel, whom you have defied.This very day the Lord will deliver you into my hand, and I will strike you down and cut off your head; and I will give the dead bodies of the Philistine army this very day to the birds of the air and to the wild animals of the earth, so that all the earth may know that there is a God in Israel, and that all this assembly may know that the Lord does not save by sword and spear; for the battle is the Lord’s and he will give you into our hand.” When the Philistine drew nearer to meet David, David ran quickly toward the battle line to meet the Philistine. David put his hand in his bag, took out a stone, slung it, and struck the Philistine on his forehead; the stone sank into his forehead, and he fell face down on the ground. So David prevailed over the Philistine with a sling and a stone, striking down the Philistine and killing him; there was no sword in David’s hand. Then David ran and stood over the Philistine; he grasped his sword, drew it out of its sheath, and killed him; then he cut off his head with it. When the Philistines saw that their champion was dead, they fled. The troops of Israel and Judah rose up with a shout and pursued the Philistines as far as Gath and the gates of Ekron, so that the wounded Philistines fell on the way from Shaaraim as far as Gath and Ekron. The Israelites came back from chasing the Philistines, and they plundered their camp. David took the head of the Philistine and brought it to Jerusalem; but he put his armor in his tent. (1 Samuel 17:41-54, NRSV)
David faced his fear of the giant because he knew that God was with him. And God doesn’t need an army to defeat an enemy. God just needs one person who is ready to trust Him.
What could God use you for?