When John the Revelator looked into Heaven, he saw liturgy.
He saw white-robed priests and worshipers ministering in the sanctuary. He saw candles and incense. He heard voices lifted in hymns of praise. A scroll was unrolled to read God’s Word. And the whole thing climaxed with the appearance on the altar of the Lamb, slain but living still, and the wedding feast celebrating the joining of heaven and earth. If that doesn’t sound familiar, you must never have been to Mass before.