The Sin Of Judging Priests

Blessed is that servant who trusts in the priests who live justly, according to the rules of the holy Roman Church, and woe to those who despise them; for even if they were sinners, still no one ought to judge them, for God reserves to himself the right of doing so. For as their charge is greater than that of any others, namely, the administration of the most holy body and blood of the Lord Jesus Christ, which they receive, and which they alone can give to others, so the sin of those who offend against them is greater than against anyone else in the world.

St. Francis
Admonitions to the Brethren