Holy Orders is the sacrament by which bishops, priests and deacons are ordained and receive the power and grace to perform their sacred duties. The sacred rite by which orders are conferred is called ordination. The apostles were ordained by Jesus at the Last Supper so that others could share in his priesthood. Holy Orders, which was instituted by Christ himself, is administered by the laying on of hands by the Bishop, through which the priest is given the power to serve the Church through his preaching, teaching and celebration of the Sacraments.