Saints Zosimus and Athanasius are commemorated together on January 4 as confessors of the faith from the time of the persecution under Diocletian, in Cilicia of Asia Minor. Zosimus was a hermit and ascetic who had given himself to prayer, fasting, and solitude; Athanasius was a commentarisius — a prison official, or jailer — whose meeting with Zosimus changed his life.
Arrested during the persecution and brought before the authorities, Zosimus confessed Christ and was subjected to torture, which he endured with remarkable calm and steadfastness. Athanasius, the jailer set over him, was so moved by the constancy of the hermit under suffering that he came to believe and openly confessed Christ himself.
Tradition records that the two then withdrew together into the wilderness, where they passed the remainder of their lives in ascetic stillness and reposed in peace. Because they suffered for the faith yet were not put to death, the Church honors them not as martyrs but as confessors.
Little else is preserved of their origins, families, or the precise circumstances of their deaths; their memory survives chiefly through the synaxaria and the liturgical commemoration that has carried their witness in Orthodox tradition.