1 Samuel 17:41

37 David added, “The LORD, who delivered me from the claws of the lion and the bear, will deliver me from the hand of this Philistine.” “Go,” said Saul, “and may the LORD be with you.”

38 Then Saul clothed David in his own tunic, put a bronze helmet on his head, and dressed him in armor.

39 David strapped his sword over the tunic and tried to walk, but he was not accustomed to them. “I cannot walk in these,” David said to Saul. “I am not accustomed to them.” So David took them off.

40 And David took his staff in his hand, selected five smooth stones from the brook, and put them in the pouch of his shepherd’s bag. And with his sling in hand, he approached the Philistine.

41 Now the Philistine came closer and closer to David, with his shield-bearer before him.

42 When the Philistine looked and saw David, he despised him because he was just a boy, ruddy and handsome.

43 “Am I a dog,” he said to David, “that you come at me with sticks?” And the Philistine cursed David by his gods.

44 “Come here,” he called to David, “and I will give your flesh to the birds of the air and the beasts of the field!”

45 But David said to the Philistine, “You come against me with sword and spear and javelin, but I come against you in the name of the LORD of Hosts, the God of the armies of Israel, whom you have defied.

Read all of 1 Samuel 17