12 The Bishops of the Church of Christ, "ordained in the things that appertain to God ( Heb . v, 1) must watch that pernicious errors of this sort, and consequent practices more pernicious still, shall not gain a footing among their flock. It is part of their sacred obligations to do whatever is in their power to enforce respect for, and obedience to, the commandments of God, as these are the necessary foundation of all private life and public morality; to see that the rights of His Divine Majesty, His name and His word be not profaned; to put a stop to the blasphemies, which, in words and pictures, are multiplying like the sands of the desert; to encounter the obstinacy and provocations of those who deny, despise and hate God, by the never-failing reparatory prayers of the Faithful, hourly rising like incense to the All-Highest and staying His vengeance.
Source: Mit Brennender Sorge (Vatican.va)