He that reproveth a scorner getteth to himself shame. He who tries to correct a scorner (see on Proverbs 1:22 and Proverbs 3:34), one who derides religion, loses his pains and meets with ribald mockery and insult.
It is not the fault of messengers or message that this should be, but the hardness of heart and the pride of the hearer make him despise the teaching and hate the teacher (Matthew 24:9). He that rebuketh a wicked man getteth himself a blot; rather, he that reproveth a sinner, it is his blot.
Such a proceeding results in disgrace to himself. This is not said to discourage the virtuous from reproving transgressors, but states the effect which experience proves to occur in such cases. Prudence, caution, and tact are needed in dealing with these characters.
Evil men regard the reprover as a personal enemy, and treat him with contumely, and hence arise unseemly bickerings and disputes, injurious words and deeds. To have wasted teaching on such unreceptive and antagonistic natures is a shameful expenditure of power.
St. Gregory thus explains this matter: "It generally happens that when they cannot defend the evils that are reproved in them, they are rendered worse from a feeling of shame, and carry themselves so high in their defence of themselves, that they take out bad points to urge against the life of the reprover, and so they do not account themselves guilty, if they fasten guilty deeds upon the heads of others also.
And when they are unable to find true ones, they feign them, that they may also themselves have things they may seem to rebuke with no inferior degree of justice" ('Moral.,' 10.3, Oxford transl.).