David had to deal with a BIG problem. His name was Goliath, and that means BIG!! David had to use a sling shot and a stone because that was his usual mode of warfare. We no longer fight living flesh, but evil spiritual entities, (Ephesians 6:12), which we can’t see. If you can’t see it, guns or earthly weapons won’t work. Fortunately, God has given us the most powerful weapons in the universe: His Word! Speak His Words outloud, and you drop atomic bombs in the unseen realm, which will change this world forever!