Neonian Baptistery, wall mosaic decoration, cupola, framed medallion: the Baptism of Christ in the river Jordan. Christ is shown naked and half-submerged in the river. John the Baptist, holding a jeweled cross, is raising a paten on Christ's head. On the left, half-submerged in the river, a white-haired old man stands holding a reed; he is the personification of the river Jordan. Above the Holy Spirit is depicted in the form of a dove.