1 Samuel 17:38-40

American Standard Version

³⁸ And Saul clad David with his apparel, and he put a helmet of brass upon his head, and he clad him with a coat of mail. ³⁹ And David girded his sword upon his apparel, and he assayed to go; for he had not proved it. And David said unto Saul, I cannot go with these; for I have not proved them. And David put them off him. ⁴⁰ And he took his staff in his hand, and chose him five smooth stones out of the ^[a]brook, and put them in the shepherd’s bag which he had, even in his wallet; and his sling was in his hand: and he drew near to the Philistine.