1 Samuel 17:39
And David girded his sword upon his armor, and he essayed to go; for he had not proved it . And David said to Saul, I cannot go with these, for I have not proved them . And David put them off from him.And David girded his sword upon his armor, and he essayed to go; for he had not proved it . And David said to Saul, I cannot go with these, for I have not proved them . And David put them off from him.