Proverbs 6:19 (BSB)

a false witness who gives false testimony, and one who stirs up discord among brothers.

From Proverbs 6. Also in the ESV.

Commentary on Proverbs 6:19

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 6:12-19: Solomon here gives us, I. The characters of one that is mischievous to man and dangerous to be dealt with. If the slothful are to be condemned, that do nothing, much more those that do ill, and contrive to do all the ill they can. It is a naughty person that is here spoken of, Heb.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 6:19: My son, keep thy father's commandment,.... These are not the words of David to Solomon continued from Pro 4:4; but the words of Solomon to his son; and not to his son only, in a strict natural relation, but to everyone that came to him for and put himself under his instruction; and to everyone that stood in such a relation to a religious father...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 6:19: speaketh--literally, "breathes out," habitually speaks (Psa 27:12; Act 9:1).
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Proverbs 6:16-19: Pro 6:16-19 What now follows is not a separate section (Hitzig), but the corroborative continuation of that which precedes. The last word (מדנים, strife) before the threatening of punishment, 14b, is also here the last. The thought that no vice is a greater abomination to God than the (in fact satanical) striving to set men at variance who love one another, clothes itself in the...