Youcat commented through CCC – Question n. 253.

YOUCAT Question n. 253 - How important for a Catholic Christian is his bishop?

(Youcat answer) A Catholic Christian feels that he is under an obligation to his Bishop; the bishop is appointed for him, too, as Christ’s representative. Moreover, the bishop, who exercises his pastoral ministry together with priests and deacons as his ordained assistants, is the visible principle and the foundation of the local Church (diocese).

A deepening through CCC

(CCC 1560) As Christ's vicar, each bishop has the pastoral care of the particular Church entrusted to him, but at the same time he bears collegially with all his brothers in the episcopacy the solicitude for all the Churches: "Though each bishop is the lawful pastor only of the portion of the flock entrusted to his care, as a legitimate successor of the apostles he is, by divine institution and precept, responsible with the other bishops for the apostolic mission of the Church" (Pius XII, Fidei donum: AAS 49 (1957) 237; cf. LG 23; CD 4; 36; 37; AG 5; 6; 38).

Reflecting and meditating 

(CCC Comment)

(CCC 1561) The above considerations explain why the Eucharist celebrated by the bishop has a quite special significance as an expression of the Church gathered around the altar, with the one who represents Christ, the Good Shepherd and Head of his Church, presiding (Cf. SC 41; LG 26). 

(The next question is: What happens in priestly ordination?)