Catechesis: Lord's Supper

Second, they hold that the institution of this Sacrament made by Christ is effective in Christendom, and that it does not depend on the worthiness or unworthiness of the minister who offers the Sacrament, or of the one who receives it. Since St. Paul says even the unworthy partake of the Sacrament, they hold that the body and blood of Christ are also truly offered to the unworthy, and the unworthy truly receive them.—FC SD VII:16