John Gills Exposition of the Bible Commentary - Proverbs 11:9
An hypocrite with his mouth destroyeth his neighbour ,.... Deceives him with his flatteries and lies, and draws him into destructive schemes and practices; or "corrupts" him, as the word F9 ישחת "corrumpet", Schultens; so Pagninus, Montanus; "corrumpit", Vatablus, Junius & Tremellius, Piscator, Mercerus, Gejerus. signifies, and as the Targum renders it, with false doctrines; so, with fair words and good speeches, such who lie in wait to deceive impose upon the simple and... read more
Matthew Henry's Complete Commentary - Proverbs 11:9
Here is, 1. Hypocrisy designing ill. It is not only the murderer with his sword, but the hypocrite with his mouth, that destroys his neighbour, decoying him into sin, or into mischief, by the specious pretences of kindness and good-will. Death and life are in the power of the tongue, but no tongue more fatal than the flattering tongue. 2. Honesty defeating the design and escaping the snare: Through knowledge of the devices of Satan shall the just be delivered from the snares which the... read more