A priest against the festivals of the city
The account of Mocius places him in Amphipolis at the height of the late Roman persecutions, where the public worship of the gods centered on civic festivals. Rather than withdraw, he is remembered for confronting one such celebration directly, calling those assembled for the feast of Dionysus to give up its customs and, by tradition, destroying an idol of the god.
Arrested under Diocletian and brought before the governor, he endured a sequence of torments. The synaxarion relates that he was unharmed in a heated furnace and that beasts loosed against him would not attack, before he was finally taken to Byzantium and beheaded.