Discovery Box1 Samuel 17:40 
Context17:40 He took his staff in his hand, picked out five smooth stones from the stream, placed them in the pouch 1 of his shepherd’s bag, took his sling in hand, and approached the Philistine.
1 Samuel 17:49
Context17:49 David reached his hand into the bag and took out a stone. He slung it, striking the Philistine on the forehead. The stone sank deeply into his forehead, and he fell down with his face to the ground.
1 tn This Hebrew word occurs only here and its exact meaning is not entirely clear. It refers to a receptacle of some sort and apparently was a common part of a shepherd’s equipment. Here it serves as a depository for the stones that David will use in his sling.
