By continually scolding someone, they in time become accustomed to it and despise your reproof.
— Proverbs

The ear that heareth the reproof of life abideth among the wise. Proverbs 15: 31
Bible reproof quote

Private reproof is the best grave for private faults.
— Proverbs

The rod and reproof give wisdom: but a child left to himself bringeth his mother to shame. Proverbs 29:15
— Bible

An ingenuous mind feels in unmerited praise the bitterest reproof.
— reproof quotation by Walter Savage Landor