Roman Catechism 24.34

Chapter 24 — Part III: The Decalogue — The First Commandment

Section 34. But as the enemy of mankind, by his wiles and deceits, seeks to pervert even the most holy institutions, should the faithful happen at all to offend in this particular, the pastor, in accordance with the decree of the Council of Trent's should use every exertion in his power to correct such an abuse, and, if necessary, explain the decree itself to the people.