Of the writings of St Cyril of Jerusalem, the most prominent are his Catechetical lectures, which are considered the most ancient systematic summary of Christian teaching. Catechetical Homilies: For those who are to be Illuminated and for those Initiated into the Mysteries by Saint Cyril of Jerusalem The essential preparation for receiving the Holy Spirit For those who are to be Illuminated and for those Initiated into the Mysteries. The Catechetical Homilies are one of the best expositions of the Orthodox Christian Faith and one of the most important documents concerning the liturgical practice of the early Church that has faithfully been preserved in the Orthodox Church to the present day. Delivered during the forty days before Pascha as a preparation for Baptism, they interpret the Creed and the fundamentals of the Orthodox Faith, and explain the sacred rites of Baptism and the Eucharist.
