He was born in Jerusalem in 315, ordained to the priesthood in 346, and succeeded Maximus as Archbishop of Jerusalem in 350. He was exiled three times by the Arian Emperors Constantius and Valens for his unwavering defense of the Faith. Restored by the Emperor Theodosius, he did not return to the throne, but lived for eight years in peace before reposing in 386.   He was known to all his people as a tireless defender of the poor, and as a great ascetic. He was gentle and humble in his bearing, pale and gaunt from fasting. He struggled throughout his time against the Arian heresy, which had become very strong, claiming the allegiance even of the Emperors. In addition, he lived through the reign of Julian the Apostate, who tried by many means to weaken and undermine the Church and the Christian Faith.   Of St Cyril's many writings, the best-known are his Catecheses, considered the oldest systematic summary of Christian teaching.