Central arch, keystone. Glorious Christ, the evangelical message is most important. He has two rolls with the commandments and the beatitudes, on the right: AV/DI - IS[RE]L / MAN /DA /TA - VI/TE (listen Israel the commandments of life), on the left: BEATI / PUV PE / RES SPI RI / TU (blessed be the paupers in spirit).