John Wesley on 2 Samuel 1:22

Not back - Without effect: their arrows shot from their bow, and their swords did seldom miss, and commonly pierced fat, and flesh, and blood, and reached even to the heart and bowels. Returned not, &c. - But filled and glutted with blood: for the sword is metaphorically said to have a mouth, which we translate an edge; and to devour. And this their former successfulness is mentioned as an aggravation of their last infelicity.