What does 1 Samuel 21:13 mean?

The priest said, The only sword here is the one you took from Goliath the Philistine. It’s wrapped in a cloth behind the ephod. If you want it, take it—there’s nothing else here. David said, There’s nothing like it. Give it to me. 1 Samuel 21:13 - Modern Text Bible

(David receives Goliath’s sword, a powerful symbol and a practical weapon for his escape.)