Saint Cyril of Jerusalem on the Mysteries Shown to the Newly Baptised
Voices from the Early Church · Tuesday 20 October 2026
Of all the great Catholic bishops of the fourth century, there is one Patriarch of the Holy City of Jerusalem who, every spring, in the great basilica built by Constantine over the empty tomb of the Lord Jesus Christ, gathered the newly baptised Catholics of the city for the first eight mornings after their Easter baptism, and gave them, standing in the Holy Sepulchre itself, the famous Mystagogical Catecheses, the five great sermons on what had actually happened to them at the Easter Vigil. His name was Cyril, and he was the Bishop of Jerusalem for forty years. His Catecheses are the single most complete picture the Catholic Church possesses of what the early Catholic initiation into Christ actually looked like.
Who
Saint Cyril of Jerusalem (around 315 to 18 March 386) was born in or near Jerusalem into a Christian family, and received his education in the Catholic schools of the Holy City. He was ordained priest around 343, and in 350, at perhaps thirty-five, he was elected Bishop of Jerusalem. He reigned for thirty-six years, through three bitter exiles imposed on him by Arian emperors, and he died at Jerusalem on 18 March 386, perhaps seventy-one years old.
In Lent of either 348 or 350, Cyril preached his famous cycle of eighteen Catechetical Lectures to the Catholic catechumens of Jerusalem preparing for baptism at the Easter Vigil, and in the week after Easter he preached the five Mystagogical Catecheses to the newly baptised, standing inside the Holy Sepulchre itself. These twenty-three lectures together are the oldest surviving complete Catholic catechetical cycle, the model for every Catholic catechumenate that has ever existed since. The Catholic Church declared him a Doctor of the Church in 1883. His feast is 18 March.
The voice
Of the twenty-three Catechetical Lectures of Cyril, the one passage the Catholic Church has carried closest to its heart is from the First Mystagogical Catechesis, preached in the Holy Sepulchre on the Monday after Easter, around 350, to the newly baptised Catholics of Jerusalem, their foreheads still wet with chrism:
“My newly illuminated ones, you were led to the sacred pool of Baptism as Christ was led from the Cross to the Sepulchre. Each of you was asked, ‘Do you renounce Satan?’ and you answered, ‘I renounce.’ You were plunged three times under the water and three times you came up, imitating the three days Christ spent in the tomb. In that single instant, you became like him. He died for you, and in you. He rose for you, and in you. From this day forward, Christ is not a figure in a story. Christ is the hidden life inside your own flesh.”
Saint Cyril of Jerusalem, First Mystagogical Catechesis, around 350
What he meant
Cyril meant that baptism is not a ceremony; it is a real, ontological, physical participation in the Death and Resurrection of the Lord Jesus Christ. The water, Cyril said, is not a symbol of cleansing. It is the actual pool in which the Catholic goes down into the tomb with Christ, and rises up with Christ. The chrism oil on the forehead is not a liturgical formality. It is the actual seal of the Holy Spirit, the same Spirit who descended on Jesus at his own baptism in the Jordan.
And Cyril meant that the Catholic Mysteries, the sacraments, are the way the Catholic Church teaches her children what has already happened to them. The lecture, in the Holy Sepulchre, was not meant to persuade them of something new. It was meant to open their eyes to what was already true in them. You died with Christ. You rose with Christ. You are, in your own baptised flesh, carrying his resurrection life. The lecture was Cyril, with tenderness, saying to the newly baptised, “Now you can see what the Lord Jesus Christ has already done to you.”
And Cyril meant something striking. He meant that every Catholic who has ever been baptised, in any century, is standing in exactly the same ontological place as the newly baptised Catholics of Jerusalem in 350. Your own baptism, perhaps as an infant you cannot remember, perhaps as an adult you remember vividly, placed you inside the Lord Jesus Christ himself. The seal has never been undone. Cyril’s sermon is being preached, right now, to every Catholic reader who stops long enough to listen.
Voices that came after
The whole Catholic liturgy of the Easter Vigil, as the Catholic Church still celebrates it, is lifted almost verbatim from Cyril’s Jerusalem rite of 350. The threefold immersion, the renunciation of Satan, the chrism oil, the white garment, the lighted candle, are, in the twenty-first-century Catholic parish, exactly what they were in Cyril’s cathedral.
The Rite of Christian Initiation of Adults (RCIA, 1972), the post-conciliar Catholic ritual for adult baptism, cites Cyril as its single greatest patristic source.
The Catechism of the Catholic Church quotes Cyril repeatedly in its sections on Baptism and Confirmation.
Pope Benedict XVI, in his audience of 27 June 2007, said, “Cyril of Jerusalem is the Catholic bishop who taught the Church, East and West, that catechesis is not information but revelation, the unveiling of what the Holy Spirit has already written on the baptised soul.”
Why it still matters today
You live in a century in which many Catholics, baptised as babies, treat their baptism as a sweet family story, like the christening photograph on the mantelpiece. You half-remember that something happened to you at a font sixty years ago, but it feels, now, like a lovely tradition from a distant childhood. You have not, perhaps, lately opened your Catholic heart to what Cyril, in Jerusalem, was telling his newly baptised: Christ actually died in you. Christ actually rose in you. He is actually inside your own flesh, right now, as his resurrection life.
Cyril walks across sixteen centuries this Tuesday morning, out of the empty tomb itself, puts the oil of chrism gently once more on your forehead, and says, with the quiet, blazing certainty of a bishop who stood in the Holy Sepulchre:
🌷 “You have died with Christ. You have risen with Christ. He is already inside you. Live from there.” 🌷
Tonight, before you sleep, make the sign of the cross slowly, three times, over your own forehead, slowly: “In the name of the Father, and of the Son, and of the Holy Spirit.” That cross traces the chrism Cyril put on the newly baptised in Jerusalem in 350. It is still there on your forehead. The Lord Jesus Christ, Cyril promises you, is still inside the flesh he sealed. He has never left.
A line to carry into the week
“Christ is not a figure in a story. Christ is the hidden life inside your own flesh.” 🌹
Saint Cyril of Jerusalem, First Mystagogical Catechesis
🌷 Saint Cyril of Jerusalem, Doctor of the Church, bishop of the Holy City, catechist of the newly baptised, pray for us.
Feast day: 18 March (Roman Catholic Church)