21 Christ, the only Son of the Father, by the power of the Incarnation itself was made Mediator between heaven and earth, between the Father and the human race. Wholly in accord with this mission, Christ remained throughout His whole life in the state of celibacy, which signified His total dedication to the service of God and men. This deep concern between celibacy and the priesthood of Christ is reflected in those whose fortune it is to share in the dignity and mission of the Mediator and eternal Priest; this sharing will be more perfect the freer the sacred minister is from the bonds of flesh and blood. (28)
Source: Sacerdotalis Caelibatus (Vatican.va)