is what every Catholic sees at every Sunday Mass: A consecrated, celibate man—a priest—worshipping God in liturgical chant, incensing God’s altar, and praying above that altar, which should contain underneath or within it the relics of a martyr or saint. What John hears should sound equally familiar. First, there are the antiphonal chants: “Holy, holy, holy is the Lord God almighty”; “To him who sits upon the throne and to the Lamb be blessing and honor and glory and might forever”; “Salvation belongs