Catholic and Orthodox Christians believe that the Eucharist, which they hold to be one in substance with the one self-sacrifice of Christ on the Cross, is a far superior offering when compared with the merely preparatory temple sacrifices, as explained in the Epistle to the Hebrews. They also believe that Christ Himself is the "New Temple", as spoken of in the Book of Revelation and that Revelation can best be understood as the Eucharist, heaven on earth. Their church buildings are meant to model Solomon's Temple, with the Tabernacle, containing the Eucharist, being considered the new "Holy of Holies." Therefore, they do not attach any significance to a possible future rebuilding of the Jerusalem Temple.