Julian tried to bring back heathen customs, and to have the old gods worshipped again; but he was killed in an expedition against the Persians, and soon after his time the old idol-worship was quite forgotten.  Every city had a Bishop and clergy, and the Bishops of each division of the empire were under a great ruling Bishop, who was called a Patriarch.  Greece was under the Patriarch of Constantinople.  The Greek churches were made as like the pattern of the temple at Jerusalem as they could be.  The end which represented the Holy of Holies, and had the altar in it, was veiled, and enclosed within what were called the Royal Gates, and these were only opened at times of celebrating the Holy Communion.  This end was raised steps, and the Holy Scriptures and sermon were spoken to the people from the front of the Royal Gates.  The pavement was of rich marble, and the ceiling, which was generally vaulted, was inlaid with coloured stones, making pictures in what is called Mosaic, because thus the stones were set by Moses in the High Priest’s vestment.  The clergy wore robes like those of the priests, and generally had flowing hair and beards, though in front the hair was cut in a circlet, in memory of our Lord’s crown of thorns.