On the Incarnation of Christ

Focusing on the theological implications of Christ's nature, St. John Cassian's treatise addresses the heresy of Nestorianism and critiques various erroneous views on Christ, including those of Ebion, Cerinthus, and Pelagius. Written in 429 at the request of Leo, Archdeacon of Rome, the work is a response to the Christological controversies leading to significant church councils. Cassian emphasizes the importance of ongoing revelation through Scripture and Tradition, asserting that true understanding aligns with Catholic doctrine. His insights remain relevant in contemporary theological discussions.