Matthew Henry's Complete Bible Commentary
Verse 23
Here see, 1. How we must discourage sin and witness against it, and particularly the sin of slandering and backbiting; we must frown upon it, and, by giving it an angry countenance, endeavour to put it out of countenance. Slanders would not be so readily spoken as they are if they were not readily heard; but good manners would silence the slanderer if he saw that his tales displeased the company. We should show ourselves uneasy if we heard a dear friend, whom we value, evil-spoken of; the same dislike we should show of evil-speaking in general. If we cannot otherwise reprove, we may do it by our looks. 2. The good effect which this might probably have; who knows but it may silence and drive away a backbiting tongue? Sin, if it be countenanced, becomes daring, but, if it receive any check, it is so conscious of its own shame that it becomes cowardly, and this sin in particular, for many abuse those they speak of only in hopes to curry favour with those they speak to. MHBCC 654.17