C. F. Keil and Franz Delitzsch on Proverbs 19:5

Pro 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.