1 Samuel 17:37-39 21st Century King James Version (KJ21)
37 David said moreover, “The Lord who delivered me out of the paw of the lion and out of the paw of the bear, He will deliver me out of the hand of this Philistine.” And Saul said unto David, “Go, and the Lord be with thee.”
38 And Saul armed David with his armor, and he put a helmet of brass upon his head; also he armed him with a coat of mail.
39 And David girded his sword upon his armor, and he attempted to go, for he had not tested it. And David said unto Saul, “I cannot go with these, for I have not tested them.” And David put them off him.