Out of all these soldiers, 700 of them were left-handed and each one could sling a stone at a hair and never miss.
1 Samuel 17:50
David defeated the Philistine with a sling and a stone; he struck down the Philistine and killed him, and there was no sword in David's hand.
1 Samuel 17:49
David reached his hand into the bag, took out a stone, slung it, and struck the Philistine in his forehead. The stone sunk into his forehead, and he fell on his face to the ground.
Tying a stone to a sling that's what giving honor to a fool is.
1 Samuel 17:40
He took his staff in his hand and chose for himself five smooth stones from the brook and put them in the pouch in his shepherd's bag. He approached the Philistine with his sling in his hand.