David girded his sword on his clothing, and he tried to go; for he had not proved it. David said to Saul, I can't go with these; for I have not proved them. David put them off him.
for he had not proved [it]; as warriors were wont to do; so Achilles did i; he never made trial of such armour before, he had not been used to it, and knew not how to behave in it, or walk with it on him; it was an encumbrance to him: Abarbinel renders it, "but he had not proved [it]"; he would have gone with it but for that reason; the Targum is,