David prevailed over the Philistine with just the sling and the stone. He struck down the Philistine and killed him. David did not even have a sword in his hand.

He took his staff in his hand, picked out five smooth stones from the stream, placed them in the pouch of his shepherd’s bag, took his sling in hand, and approached the Philistine.

When someone sets out to chase you and to take your life, the life of my lord will be wrapped securely in the bag of the living by the Lord your God. But he will sling away the lives of your enemies from the sling’s pocket!