Christology is an attempt to relate the two natures of Christ; apology on the other hand, has the dual aim of justification and attack; both these entail polar structures. It is argued in this paper that these two binary systems of opposition interfered with each other to a certain extent. This occurred because of the practice of the early church to establish institutional stability and consent via a process of polarisation. The effect of apologetic antitheses on Ephrem’s description of the (...) natures of Christ is investigated. Examples from Ephrem’s work relating to the polarity between the church and Judaism, between the nature of God and Arianism, and between the nature of God and humanity are discussed. (shrink)