St Cyril of Jerusalem was born around the year 315. He was known for being a great teacher of catechumens; Cyril’s instructions are still source documents for the Church‘s early teachings. He was Bishop of Jerusalem and was exiled three times by the Arians, usually on some trumped up charge like selling church furniture, but actually on theological grounds. He attended the Council of Seleucia and the Council of Constantinople. He died around 386 and is a Doctor of the Church.