Saint John in the Desert

Known also as John with the Ram, it is considered by some critics to be Isaac holding the ram to be sacrificed by Abraham in his place. There is another famous version of the painting at the Galleria Doria Pamphilj. The twisted pose of Saint John is taken directly from the Michelangelo nudes of the Sistine Chapel, one of many confirmations of the extremely subtle depth of the painting of  Caravaggio, overlooked by romantic critics who often paid attention only to the realistic detail.