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.
and David said unto Saul, I cannot go with these, for I have not proved [them]; he thought fit to acquaint Saul with it that he could not go thus accoutred, and his reason for it, lest he should be offended with him: