12 Search not out the faults of men; reveal not the sin of your fellow; the shortcomings of your neighbours, in speech of the mouth repeat not. You are not judge in creation, you have not dominion over the earth. If you love righteousness, reprove your soul and yourself. Be judge unto your own sins, and chastener of your own transgressions. Make not inquiry maliciously, into the misdeeds of men. For if you do this, injuries will not be lacking to you. Trust not the hearing of the ear, for many are the deceivers. Vain reports believe not, for false rumours are not few.
Source: On Admonition and Repentance (New Advent)