The poor, or helpless; who therefore flee to God for refuge. From their mouth, or, from the sword which cometh out of their mouth, i.e. from all their censures, slanders, threatenings, deceitful insinuations, false swearings of witnesses, unrighteous sentences of corrupt judges, whereby their good names, or estates, or lives may be exposed to the utmost hazards. And this is fitly opposed to the sword of the hand, implied in the next branch of the verse. Or, from the sword by their mouths, i.e. by those wicked men's own words against the godly, which God wonderfully overruleth to the working out of their deliverance.
Related Commentaries of Job 5:15
Job 5:15
15 But he saveth the poor from the sword, from their mouth, and from the hand of the mighty.