Pope Pius XII
Mystici Corporis Christi §42
Mystici Corporis Christi: On the Mystical Body of Christ
42 What we have thus far said of the Universal Church must be understood also of the individual Christian communities, whether Oriental or Latin, which go to makeup the one Catholic Church. For they, too, are ruled by Jesus Christ through the voice of their respective Bishops. Consequently, Bishops must be considered as the more illustrious members of the Universal Church, for they are united by a very special bond to the divine Head of the whole Body and so are rightly called "principal parts of the members of the Lord;" moreover, as far as his own diocese is concerned, each one as a true Shepherd feeds the flock entrusted to him and rules it in the name of Christ. Yet in exercising this office they are not altogether independent, but are subordinate to the lawful authority of the Roman Pontiff, although enjoying the ordinary power of jurisdiction which they receive directly from the same Supreme Pontiff. Therefore, Bishops should be revered by the faithful as divinely appointed successors of the Apostles, and to them, even more than to the highest civil authorities should be applied the words: "Touch not my anointed one!" For Bishops have been anointed with the chrism of the Holy Spirit.
Source: Mystici Corporis Christi (Vatican.va)