Pope St. Sixtus II (Xystus II)

Quick Facts

Overview

St. Sixtus II is remembered as one of the great martyr popes of the Early Church. Although his pontificate lasted less than a year, his courageous witness during Emperor Valerian’s persecution made him one of Christianity’s most revered saints.

Unlike his predecessor, whose pontificate was marked by theological controversy, Sixtus II inherited a Church united but facing a deadly external threat. Emperor Valerian had begun systematically targeting bishops, priests, and deacons in an effort to destroy the Church’s leadership.

Rather than flee or hide, Sixtus continued celebrating the sacred mysteries and shepherding his flock until he was arrested while preaching in the Catacombs. He was executed along with several of his deacons, becoming one of the most famous martyrs of the third century.

Early Life

Very little is known about Sixtus before his election.

His origin is unknown. The later claim that he was Greek probably arose from confusing him with a Greek author named Xystus; the near-contemporary life of St. Cyprian instead remembers him as a good and peaceable bishop.

The historian St. Dionysius of Alexandria praised his peaceful disposition, especially after the difficult disputes over baptism during the pontificate of Pope Stephen I.

Sixtus sought reconciliation without compromising the Catholic faith.

Becoming Pope

Following the death of Pope Stephen I in AD 257, Sixtus, II was elected Bishop of Rome.

The Church was already under pressure from Emperor Valerian.

Only weeks after his election, the persecution intensified dramatically.

Valerian’s decree ordered: bishops to be executed, clergy to be arrested, Christian worship to cease, Church property to be confiscated.

Sixtus knew that accepting the papacy almost certainly meant accepting martyrdom.

Restoring Peace

One of Sixtus’ first accomplishments was restoring better relations with churches in North Africa and Asia Minor.

The controversy over the rebaptism of heretics had created tension between Rome and bishops such as St. Cyprian of Carthage.

While maintaining Pope Stephen’s doctrinal position, Sixtus approached these bishops with greater gentleness and diplomacy.

His peaceful leadership helped heal divisions within the Church just before persecution struck.

Arrest in the Catacombs

On August 6, AD 258, Roman authorities discovered Sixtus celebrating the Eucharist and instructing the faithful in the Catacomb of St. Callistus.

The catacombs had become places of prayer because public Christian worship was forbidden.

Roman soldiers entered the gathering and arrested the pope.

Ancient tradition states that he was immediately condemned to death.

Rather than deny Christ, Sixtus calmly accepted martyrdom.

The Martyrdom of the Deacons

Four deacons were executed alongside Sixtus: Januarius Vincentius Magnus Stephanus Two additional deacons: Felicissimus Agapitus were martyred shortly afterward.

Perhaps the most famous of all was St. Lawrence, the Archdeacon of Rome.

Although not arrested with Sixtus, Lawrence met the pope shortly before the execution.

According to ancient tradition, Lawrence wept because he feared he would be left behind.

A later and beloved tradition depicts Sixtus promising the deacon Lawrence that he would follow him in martyrdom after three days. Lawrence’s commemoration on August 10 is ancient, but the dramatic farewell belongs to the developed martyr tradition rather than the contemporary arrest report.

Friendship with St. Cyprian

One of the most beautiful testimonies to Sixtus comes from St. Cyprian.

Although Cyprian had disagreed strongly with Pope Stephen, he greatly admired Sixtus.

After hearing of his martyrdom, Cyprian praised him as a faithful shepherd who gave his life for Christ.

Only a few weeks later, Cyprian himself would suffer martyrdom under the same persecution.

Historical Context

Roman Emperor Valerian (AD 253-260) Valerian’s persecution specifically targeted Church leadership.

His goal was to destroy Christianity by eliminating: bishops, priests, deacons, Christian property.

Instead, the courage of these martyrs strengthened the faith of countless believers.

The Church

During Sixtus’ pontificate, The Valerian persecution reached its height.

Numerous bishops suffered martyrdom.

St. Lawrence prepared for his own martyrdom.

Relations between Rome and North Africa improved.

Christian worship moved increasingly into the catacombs.

Heresies & Challenges

Imperial Persecution Unlike earlier theological controversies, Sixtus’ greatest challenge came from violent persecution.

His response was simple: Remain faithful to Christ.

His courage inspired generations of Christians.

Preserving Church Unity

Despite recent disagreements over baptism, Sixtus strengthened communion among bishops by combining doctrinal fidelity with pastoral charity.

Key Acts and Historical Significance

• 24th Pope of the Catholic Church
• Restored peace after the rebaptism controversy
• Strengthened unity among bishops
• Led the Church during Valerian’s persecution
• Suffered martyrdom while celebrating the sacred mysteries
• Inspired the witness of St. Lawrence and countless martyrs

Interesting Facts

• Sixtus II was executed while celebrating Christian worship in the catacombs.
• He is one of the most famous martyr popes of the third century.
• He restored peaceful relations with St. Cyprian after earlier disputes.
• His martyrdom inspired one of the Church’s greatest saints, St. Lawrence.
• His feast is celebrated just days before St. Lawrence’s feast, reflecting their close connection.
• The Roman Canon (Eucharistic Prayer I) includes “Sixtus” among the early martyrs remembered at every traditional Mass.

Legacy

St. Sixtus II demonstrates that true leadership in the Church often requires the courage to sacrifice everything for Christ. Faced with persecution aimed directly at the Church’s hierarchy, he neither abandoned his flock nor ceased celebrating the Eucharist. Instead, he continued his ministry until the moment of his arrest, sealing his witness with his blood.

His brief pontificate also reminds us that charity strengthens truth. By restoring peace with bishops who had recently disagreed with Rome, Sixtus showed that firm adherence to Apostolic Tradition can be joined with humility and reconciliation.

His martyrdom, together with those of his deacons and St. Lawrence, became one of the defining moments of the Valerian persecution and strengthened the faith of Christians throughout the Roman world.

Sources and Further Study

Scripture References

• Matthew 10:28-33
• Matthew 16:18-19
• John 10:11-18
• John 15:13
• John 21:15-17
• 2 Timothy 4:6-8
• Revelation 2:10

Primary Historical Sources

• Sacred Scripture (Douay-Rheims Bible)
• St. Cyprian of Carthage, Letters (especially Epistles 80-81)
• Eusebius, Ecclesiastical History VII
• Liber Pontificalis
• The Acts of St. Lawrence (early Christian tradition)
• Archaeological evidence from the Catacomb of St. Callistus

Timeline