Justin Martyr
The philosopher who carried the faith into the emperor's court
Justin was born around AD 100 in Flavia Neapolis, near ancient Shechem in Samaria. He was not born a Jew and not born a Christian. He was born a Gentile with a hunger for philosophy, and he worked his way through the schools of his day, Stoics, Pythagoreans, Peripatetics, and finally the Platonists, looking for the thing philosophy promises and rarely delivers: a settled account of the soul, God, and the good. He found it, he said, not in a lecture hall but in a conversation with an old man on a beach near the sea, who pointed him toward the Hebrew prophets and toward Christ. He was converted, and he never put away the philosopher's cloak. He wore it to his death.
The chain from the apostles
Justin was a near-contemporary of Polycarp, who died in AD 155, and he worked in Rome while Irenaeus was still a young man. He did not sit under the apostles directly, but he lived close enough to their generation that the faith he received was the faith they planted. His converts included a man named Tatian, who would go on to weave the four Gospels into a single narrative, the Diatessaron, that shaped Syrian Christianity for centuries. The chain runs: John to Polycarp, Polycarp to Irenaeus; and beside that chain, teaching in Rome at the same moment, Justin.
His three surviving works
Most of what Justin wrote is lost. Three works survive, all from the period AD 150 to 165, all public domain in the Ante-Nicene Fathers translation.
- The First Apology. Addressed directly to the Emperor Antoninus Pius and his sons, including the future emperor Marcus Aurelius. Justin argues that Christians are not atheists, not cannibals, not seditionists; he describes the Sunday assembly, baptism, and the Eucharist, providing the earliest detailed description of Christian worship outside the New Testament; he argues that the prophets predicted Christ long before he came; and he asks for a fair hearing under Roman law. It is the boldest piece of writing produced in the second century: a man with no political standing walking straight into the court of the most powerful empire on earth and saying you are wrong about us, and here is why.
- The Second Apology. Shorter, addressed to the Roman Senate, prompted by the execution of Christians he had witnessed. More urgent in tone.
- The Dialogue with Trypho. A long record of a conversation with a Jewish philosopher named Trypho, probably set in Ephesus. Justin argues from the Hebrew prophets that Jesus is the Messiah they predicted, that the old covenant has been superseded, and that the church is the true heir of Abraham's promise. It is the fullest early Christian engagement with Jewish objections to Jesus.
All three works are in Volume 1 of the Ante-Nicene Fathers series (Roberts & Donaldson, 1885), which is fully public domain and available at sacred-texts.com and ccel.org (Christian Classics Ethereal Library). Search either site for "Justin Martyr." The ANF numbering is standard: 1 Apol., 2 Apol., Dial.
The Logos: his biggest idea
Justin's most influential move was identifying Christ with the Logos of John 1, and then arguing that this same Logos had always been active in the world, placing seeds of truth (he called them logos spermatikos, the sowing word) in every human capable of reason. This is why, he argued, Socrates and Heraclitus and the Stoics had glimpsed true things: they were, without knowing it, drawing on the light of the same Word who became flesh in Christ.
John 1:9 · KJVThat was the true Light, which lighteth every man that cometh into the world.
Justin read that verse as literal and cosmic: the light that lights every man is the pre-incarnate Christ, and wherever truth appeared in pagan philosophy, it was his light at work. The practical effect was to give Christianity intellectual standing in the Roman world without surrendering its claim to be the final and fullest revelation. He was not saying all religions are equally true. He was saying the truth in philosophy is a fragment, and the whole is in Christ.
What he got right
The courage alone earns him a hearing. He wrote to emperors at a time when writing to emperors as a Christian was not a career move. He described the Sunday assembly in terms so clear that liturgical historians still use his account as the baseline for second-century worship. He demonstrated that Christianity could be argued, not just asserted, on grounds that educated Romans could follow. And he died for it: around AD 165, under Marcus Aurelius, he was denounced by a philosopher named Crescens (whom he had publicly embarrassed in debate), tried before the city prefect Rusticus, and beheaded with six companions. His very name, the name his martyrdom earned him, tells you what the early church thought of what he did.
We have been taught that Christ is the first-born of God, and we have declared above that He is the Word of whom every race of men were partakers; and those who lived reasonably are Christians, even though they have been thought atheists; as, among the Greeks, Socrates and Heraclitus, and men like them.
The honest weighing
Justin's use of Greek philosophy is a strength and a strain at the same time. His Logos theology is genuinely illuminating, and John 1 gives it real grounding. But when he presses further, arguing that Plato borrowed from Moses, that the pagan oracles were demons counterfeiting Christian truth in advance, and that philosophy is a preparation for the Gospel the way the Law was for Israel, he is working hard to bring two things together that do not always fit smoothly. Later readers, Tertullian especially, pushed back sharply: "What has Athens to do with Jerusalem?" is Tertullian's question, and it is a fair one to hold alongside Justin's answer.
There is also a tendency in the Dialogue with Trypho to read the Hebrew prophets in ways that would have surprised their original hearers, not because typology is wrong (the New Testament does it) but because Justin sometimes presses the allegory farther than the text will naturally bear. The case he makes for Jesus from Isaiah 53 and Psalm 22 is strong; some of his other prophetic readings require more charity to follow.
None of this diminishes the witness. A man who writes to the emperor saying "stop killing us, and here is the argument you should answer" and then presents his neck when the argument is not answered has paid a price that settles the sincerity question permanently. He is worth reading. He should be read with the text open beside him.
Study the passages
- John 1:1-14: the Logos, the light that lights every man
- 1 Corinthians 1:22-24: Jews seek signs, Greeks seek wisdom, we preach Christ crucified
- Isaiah 53: the suffering servant Justin argued to Trypho
- Psalm 22: the Crucifixion psalm Justin cited throughout
Primary source: Justin Martyr, trans. Marcus Dods and George Reith, in Ante-Nicene Fathers, Vol. 1 (Roberts & Donaldson, 1885), public domain. Available free at sacred-texts.com and ccel.org. Account of his martyrdom: The Martyrdom of Justin, ANF Vol. 1, same edition. Scripture from the King James Version, linked to BibleHub. The account of his conversion by the old man on the beach is from the opening chapters of the Dialogue with Trypho. Dates follow the standard scholarly consensus (J.N.D. Kelly, Early Christian Doctrines, 5th ed.).