All clergy, including deacons, priests, and bishops, may preach, teach, baptize, witness marriages, and conduct funeral liturgies.[10] Only priests and bishops can celebrate the sacraments of the Eucharist (though others may be ministers of Holy Communion),[11] Penance (Reconciliation, Confession), Confirmation (priests may administer this sacrament with prior ecclesiastical approval), and Anointing of the Sick.[12][13] Only bishops can administer the sacrament of Holy Orders, by which men are ordained as priests or deacons.[14]