§1. Since he must protect the unity of the universal Church, a bishop is bound to promote the common discipline of the whole Church and therefore to urge the observance of all ecclesiastical laws.
§2. He is to exercise vigilance so that abuses do not creep into ecclesiastical discipline, especially regarding the ministry of the word, the celebration of the sacraments and sacramentals, the worship of God and the veneration of the saints, and the administration of goods.
Source: Code of Canon Law (Vatican.va)