1 Samuel 17:40-50

40And he took his staff in his hand, and chose him five smooth stones out of the brook, and put them in the shepherd's bag that he had, into the pocket; and his sling was in his hand. And he drew near to the Philistine.

41And the Philistine came on and approached David; and the man that bore the shield was before him.

42And when the Philistine looked about and saw David, he disdained him; for he was a youth, and ruddy, and besides of a beautiful countenance.

43And the Philistine said to David, Am I a dog, that thou comest to me with staves? And the Philistine cursed David by his 1gods.

44And the Philistine said to David, Come to me, and I will give thy flesh to the fowls of the heavens and to the beasts of the field.

45And David said to the Philistine, Thou comest to me with sword, and with spear, and with javelin; but I come to thee in the name of Jehovah of hosts, the 2God of the armies of Israel, whom thou hast defied.

46This day will Jehovah deliver thee up into my hand; and I will smite thee, and take thy head from thee; and I will give the carcases of the camp of the Philistines this day to the fowl of the heavens and to the wild beasts of the earth. And all the earth shall know that Israel has a 3God;

47and all this congregation shall know that Jehovah saves not with sword and spear; for the battle is Jehovah's, and he will give you into our hands.

48And it came to pass, when the Philistine arose, and came and advanced to meet David, that David hasted, and ran towards the ranks to meet the Philistine.

49And David put his hand into the bag, and took thence a stone, and slang it, and smote the Philistine in his forehead, and the stone sank into his forehead; and he fell on his face to the earth.

50So David overcame the Philistine with a sling and a stone, and smote the Philistine and killed him; and there was no sword in the hand of David.