Differences Between Nestorianism and Monophysitism Theologically

Nestorianism and Monophysitism represent two distinct Christological heresies that emerged in the early Church, primarily concerning the relationship between Christ's divine and human natures. While both deviated from orthodox teaching, they did so in opposing directions: Nestorianism was accused of dividing Christ's natures too sharply, while Monophysitism was accused of confusing them ^[3].

Nestorianism, named after Nestorius, Patriarch of Constantinople (428–431 AD), emphasized the distinctness of Christ's two natures—divine and human—to such an extent that it was perceived as separating them into two persons. The concern was that Nestorius's teaching implied two distinct subjects in Christ: the divine Word and the human Jesus, rather than one unified person. This led to the rejection of the title Theotokos (God-bearer) for Mary, preferring Christotokos (Christ-bearer), arguing that she bore only the human nature, not the divine ^[3]. The orthodox position, affirmed at the Council of Ephesus (431 AD), maintained that Christ is one person with two complete natures, divine and human, united without confusion, change, division, or separation ^[3].

In contrast, Monophysitism, which gained prominence after the Council of Ephesus, argued that Christ had only one nature (Greek: monos physis). This view typically held that Christ's human nature was absorbed into his divine nature, or that the two natures fused into a single, new nature. The implication was that Christ's humanity was either diminished or effectively ceased to exist as a distinct nature, thereby compromising his full identification with humanity ^[2]. The orthodox response, articulated at the Council of Chalcedon (451 AD), affirmed the "two natures in one person" doctrine, explicitly rejecting both the Nestorian separation and the Monophysite confusion of natures ^[3].

The theological debates surrounding these positions often centered on the implications for Christ's will and his ability to be tempted. Charles Hodge notes that if Christ had only one will, it would imply only one nature, as will is an essential faculty of a rational nature. Denying Christ a human will would effectively deny his human nature and preclude the possibility of his having been tempted, thus contradicting Scripture and separating him from humanity ^[2]. This point highlights a key concern with Monophysitism, as a single, divine will might overshadow or negate a truly human will.

The patristic tradition, as seen in John of Damascus, emphasizes that while Christ's natures are united, they are united "without confusion" and "without change." This means that neither nature is absorbed or altered by the other. Similarly, they are united "without division" and "without separation," meaning they are not two distinct persons but one Christ ^[3]. This careful articulation sought to navigate the extremes presented by Nestorianism and Monophysitism.

The broader context of these debates also touched upon philosophical ideas. Some early Christian thinkers, influenced by Platonism, conceived of reason in humanity as part of the divine Logos, suggesting a quantitative rather than qualitative difference between human and divine intelligence. This perspective could complicate understanding how both a part of the Logos and the entire Logos could coexist in Christ without the part being superseded ^[1]. Such philosophical undercurrents sometimes contributed to the difficulty in precisely defining the hypostatic union.