Ezekiel and the Fiery Chariot
Romanian Orthodox Church of the Holy Apostle Paul and St. Lucy the Martyr, Syracuse, Sicily
The Greek words above the chariot mean "the fiery ascent of the prophet Ezekiel." The river in the lower left is the Chebar, which is mentioned at the beginning of the vision (Ezekiel 1:1). The prophet is shown once beside the river and once on his knees at the chariot. The vision's description of the chariot is utterly symbolic and resists visual presentation, so the iconographer simply puts God in a chariot surrounded by fire and drawn by four horses. The vision does indeed mention four beasts, but they are nothing so visualizable as a horse.
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Photographed at the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.