Parallel
1 Samuel 17:39
Brenton's English Septuagint · Berean Standard Bible
And he girt David with his sword over his coat: and he made trial walking [with them] once and again: and David said to Saul, I shall not be able to go with these, for I have not proved [them]: so they remove them from him.
David strapped his sword over the tunic and tried to walk, but he was not accustomed to them. “I cannot walk in these,” David said to Saul. “I am not accustomed to them.” So David took them off.