Catechesis

However, the fact that the Sacraments are administered by the unworthy does not detract from the Sacraments’ power. Because of the call of the Church, the unworthy still represent the person of Christ and do not represent their own persons, as Christ testifies, “The one who hears you hears me” (Luke 10:16). (Even Judas was sent to preach.) When they offer God’s Word, when they offer the Sacraments, they offer them in the stead and in the place of Christ. Those words of Christ teach us not to be offended by the unworthiness of the ministers.—Ap VII/VIII:28