For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the innocent.
All Commentaries on Romans 16:18 Go To Romans 16
Jerome
AD 420
Flattery is always insidious, deceitful and bland. And a flatterer is well defined by philosophers as a bland enemy. Truth is harsh, bitter, stern, unpleasant and offensive to those who are reproved.