Cyril of Jerusalem was an early Church Father and bishop known for his Catechetical Lectures, a series of teachings given to catechumens preparing for baptism. His writings played a significant role in shaping early Christian doctrine, especially concerning the Eucharist and the Nicene Creed. Cyril was exiled several times because he contested groups that denied the full divinity of Christ. Despite this, he was eventually vindicated and became a respected theological figure. He was later canonized as a saint in both the Eastern Orthodox and Roman Catholic traditions. On March 18, 386, Cyril was martyred for his faith.
