Among all these were seven hundred picked men who were left-handed; every one could sling a stone at a hair, and not miss.
1 Samuel 17:50
So 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.
1 Samuel 17:49
And 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.
As a bag of gems in a stoneheap, so is he that giveth honour to a fool.
1 Samuel 17:40
And 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.