NET
21 Be assured that the evil person will not be unpunished, but the descendants of the righteous have escaped harm.
Darby
21 Hand for hand! an evil [man] shall not be held innocent; but the seed of the righteous shall be delivered.
KJV
21 [Though] hand [join] in hand, the wicked shall not be unpunished: but the seed of the righteous shall be delivered.