St. Justin Martyr (about 100–165) was a philosopher who searched through the schools of his day for the truth about God, found it in Jesus Christ, and spent the rest of his life explaining and defending the Christian faith, until he was beheaded in Rome for refusing to sacrifice to the gods. His First Apology, written about the year 155, contains the oldest complete description of the Sunday Mass outside the New Testament, and it is still quoted in the Catechism of the Catholic Church. He is the patron saint of philosophers and apologists. His feast day is June 1. Below are his story, his own words on the Eucharist and on Sunday worship, the prayer of his feast and a prayer to St. Justin.
A short prayer to St. Justin, written for this page:
St. Justin, you searched for the truth until you found it in Jesus Christ.
Pray for all who are searching for God, for students and thinkers,
and give me the courage to explain my faith with clarity and love. Amen.
Who was St. Justin Martyr?
Justin was born to a pagan family around the year 100 at Flavia Neapolis, the ancient Shechem, in Samaria. Eager to know God, he studied in turn with a Stoic, a Peripatetic, a Pythagorean and a Platonist philosopher. One day, walking by the sea, he met an old man who told him about the Hebrew prophets and about Christ, whom they had foretold. Justin later wrote that a fire was kindled in his soul, and he became a Christian, impressed also by the courage of the martyrs.
He kept wearing the philosopher’s cloak and opened a school in Rome, where he taught that Christ is the Word, the Logos, of whom every seed of truth in the philosophers was a reflection. He wrote two Apologies, defenses of Christianity addressed to the emperor and the Roman Senate, and a Dialogue with Trypho, a conversation with a Jewish teacher. Around 165, under the prefect Rusticus, he and six companions were arrested, refused to sacrifice to the gods, were scourged and beheaded.
St. Justin on the Eucharist
Justin explained to the pagan emperor what Christians believe about the Eucharist (First Apology 66):
And this food is called among us the Eucharist, of which no one is allowed to partake but the man who believes that the things which we teach are true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and who is so living as Christ has enjoined. For not as common bread and common drink do we receive these; but in like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh. For the apostles, in the memoirs composed by them, which are called Gospels, have thus delivered unto us what was enjoined upon them; that Jesus took bread, and when He had given thanks, said, “This do ye in remembrance of Me, this is My body;” and that, after the same manner, having taken the cup and given thanks, He said, “This is My blood;” and gave it to them alone.
Sunday worship in the second century
And he described what Christians do on Sunday, a description that matches the shape of the Mass today: readings, a homily, the prayers of the faithful, the offering of bread and wine, the Eucharistic Prayer with the people’s Amen, Communion, and a collection for the poor (First Apology 67):
And we afterwards continually remind each other of these things. And the wealthy among us help the needy; and we always keep together; and for all things wherewith we are supplied, we bless the Maker of all through His Son Jesus Christ, and through the Holy Ghost. And on the day called Sunday, all who live in cities or in the country gather together to one place, and the memoirs of the apostles or the writings of the prophets are read, as long as time permits; then, when the reader has ceased, the president verbally instructs, and exhorts to the imitation of these good things. Then we all rise together and pray, and, as we before said, when our prayer is ended, bread and wine and water are brought, and the president in like manner offers prayers and thanksgivings, according to his ability, and the people assent, saying Amen; and there is a distribution to each, and a participation of that over which thanks have been given, and to those who are absent a portion is sent by the deacons. And they who are well to do, and willing, give what each thinks fit; and what is collected is deposited with the president, who succours the orphans and widows and those who, through sickness or any other cause, are in want, and those who are in bonds and the strangers sojourning among us, and in a word takes care of all who are in need. But Sunday is the day on which we all hold our common assembly, because it is the first day on which God, having wrought a change in the darkness and matter, made the world; and Jesus Christ our Saviour on the same day rose from the dead. For He was crucified on the day before that of Saturn (Saturday); and on the day after that of Saturn, which is the day of the Sun, having appeared to His apostles and disciples, He taught them these things, which we have submitted to you also for your consideration.
See the Order of the Mass and the Prayers of the Faithful, which Justin calls the prayers “we all rise together” to say.
The prayer of his feast from the 1916 daily missal:
O God, who by the folly of the cross didst wonderfully teach the blessed Martyr Justin the excellent knowledge of Jesus Christ, grant us through his intercession to resist the invasion of error and to grow steadfast in faith. Through the same Jesus Christ, thy Son our Lord, who liveth and reigneth with thee in the unity of the Holy Ghost, God world without end. Amen.
What is St. Justin the patron saint of?
- Philosophers and apologists
- Lecturers, orators and those who teach the faith
Feast day
The memorial of St. Justin, martyr, is June 1. Before 1969 it was kept on April 14.
Frequently asked questions
Why is St. Justin called “Martyr”?
Because he died a martyr in Rome around 165; the name has become part of how he is known.
What did St. Justin write about the Mass?
In his First Apology (chapters 65–67) he described the Sunday Eucharist of the Christians of Rome around 155, the earliest full description outside the New Testament.
When is St. Justin Martyr’s feast day?
June 1.
More saints
- St. Ignatius of Antioch
- St. Polycarp
- Sts. Perpetua and Felicity
- Order of the Mass
- Prayer before Communion
- Saint of the day
Texts and sources
- Justin Martyr, First Apology 66–67, trans. M. Dods and G. Reith, Ante-Nicene Fathers, vol. 1 (1885), public domain (Wikisource).
- The Mass Every Day of the Year (1916), St. Justin (April 14), Collect, public domain (archive.org).