He was born at the beginning of the second century in Nablus, in Samaria, of a pagan Greek family. He was an earnest seeker after truth, and studied many systems of philosophy before being led, through Platonism, to Christianity. While remaining a layman, he accepted the duty of making the truth known, and travelled from place to place proclaiming the gospel. In 151 he travelled from Ephesus to Rome, where he opened a school of philosophy and wrote defences and expositions of Christianity, which have survived to this day and are the earliest known writings of their kind. In the persecution of 165, in the reign of the emperor Marcus Aurelius, he was denounced as a Christian, arrested and beheaded. The transcript of his trial by the prefect of Rome, Rusticus, has also survived: it can be found in today’s Office of Readings.

Red is the colour of fire and of blood. Liturgically, it is used to celebrate the fire of the Holy Spirit (for instance, at Pentecost) and the blood of the martyrs.