Proverbs 19:5

In Pro 19:5 and Pro 19:9 we have the introductory proverb of two groups, the former of which, in its close as well as its beginning, cannot be mistaken. 5 A lying witness remaineth not unpunished; And he who breathes out lies escapeth not. Regarding יפיח, vid., vol. i, p. 148: as here we read it of false witness at Pro 6:19; Pro 14:5, Pro 14:25. לא ינּקה occurs four times before, the last of which is at Pro 17:5. The lxx elsewhere translates יפיח כזבים by ἐκκαίειν ψευδῆ, to kindle lies; but here by ὁ δὲ ἐκαλῶν ἀδίκως, and at Pro 19:9 by ὃς δ ̓ ἂν ἐκκαύσῃ κακίαν, both times changing only because ψευδής goes before, and instead of ψευδῆ, the choice of a different rendering commended itself.

Here we have, 1. The sins threatened - bearing false witness in judgment and speaking lies in common conversation. Men could not arrive at such a pitch of impiety as to bear false witness (where to the guilt of a lie is added that of perjury and injury) if they had not advanced to it by allowing themselves to speak untruths in jest and banter, or under pretence of doing good. Thus men teach their tongues to speak lies, Jer 9:5. Those that will take a liberty to tell lies in discourse are in a fair way to be guilty of the greater wickedness of false-witness-bearing, whenever they are tempted to it, though they seemed to detest it. Those that can swallow a false word debauch their consciences, so that a false oath will not choke them. 2. The threatening itself: They shall not go unpunished; they shall not escape. This intimates that that which emboldens them in the sin is the hope of impunity, it being a sin which commonly escapes punishment from men, though the law is strict, Deu 19:18, Deu 19:19. But it shall not escape the righteous judgment of God, who is jealous, and will not suffer his name to be profaned; we know where all liars will have their everlasting portion.

19:5 God will make sure that liars are punished (see 12:17, 19; 14:5, 25; 19:9).