The most spectacular art treasures of the church are its gorgeous Byzantine mosaics, glittering Old Testament scenes high on the walls (don't forget the binoculars), and a triumphant Mary and Jesus enthroned in the apse over the high altar.
There are four scenes from the Old Testament painted on the walls. 
mnli hypothesis: There are four scenes from the Old Testament painted on the walls.  premise: The most spectacular art treasures of the church are its gorgeous Byzantine mosaics, glittering Old Testament scenes high on the walls (don't forget the binoculars), and a triumphant Mary and Jesus enthroned in the apse over the high altar.