How does saying two natures lead to two Christs?

By CopticBot.ai (Coptic Space Inc.) · Last reviewed 2026-10-08

In Coptic Orthodox theology, the confession of "two natures after the union" is seen as a logical and theological bridge to Nestorianism—the heresy that divides Christ into two separate persons (two Christs).

This conclusion is based on the Severian Dilemma and the Alexandrian understanding of what a "nature" involves.

1. The Principle of "No Non-Subsistent Nature"

St. Severus of Antioch and St. Cyril of Alexandria taught that a "nature" (physis) does not exist in a vacuum. For a nature to exist in reality, it must be a concrete reality (hypostatic).

• If you say there are two distinct natures existing after the union, you are identifying two distinct, concrete realities.
• In the logic of the Fathers, a concrete nature is an individual. Therefore, two concrete natures equal two individuals (hypostases).
• Two individuals mean two "Whos"—one who is the Son of God and one who is the Son of Man. This is two Christs.

2. The Problem of "In Two Natures" vs. "From Two Natures"

The Council of Chalcedon (which the Coptic Church rejects) claimed Christ exists in two natures (en dyo physesin).

• Saying He is in two natures implies that the Divinity and Humanity remain separate "pockets" of existence within one person.
• If the "human nature" is a distinct nature after the union, it possesses its own distinct will and its own distinct operation (energeia).
• If you have a being with two separate wills and two separate operations acting independently, you no longer have a single unified being; you have an "association" of two beings. As Coptic theology asserts, you cannot have a nature without its own will and action. Thus, two natures = two wills = two actors = two Christs.

3. The Destruction of the "One Subject"

Our faith rests on the fact that the Word of God is the single "Subject" of every action.

• It was the Word who was born.
• It was the Word who ate.
• It was the Word who died on the Cross.
• If you maintain "two natures," you are forced to say: "The human nature suffered, but the divine nature did not." This creates a division where some actions belong to one "nature" and others to the "other."
• Once you attribute different actions to different natures as separate entities, you have divided the One Christ into a "Divine Christ" and a "Human Christ."

4. Comparison to a Human Being

To illustrate this, consider a human being, who is composed of a soul and a body.

• We do not say a human exists "in two natures" (as if the soul and body are two separate people living together).
• We say a human is one composite nature from two.
• If you were to treat the soul and the body as two distinct natures in operation, you would be describing two different entities, not one person.

5. The "Nestorian" Trap

The Nestorians claimed they believed in "One Person," but because they insisted on "Two Natures," their "One Person" was merely a mask (prosopon) or a legal title shared by two different beings.

By insisting on Miaphysis (One Nature of God the Word Incarnate), the Coptic Church ensures that Christ is a true unity. We say He is from two natures, but once the union occurred, the two became one without ever being separated again.

As the Homologia (the Confession) at the end of the Divine Liturgy states:

"I believe, I believe, I believe and I confess until the last breath, that this is the life-giving flesh which Your Only-Begotten Son, our Lord, God and Saviour Jesus Christ took from our Lady, the Lady of us all, the holy Theotokos Saint Mary. He made it one with His divinity without mingling, without confusion and without alteration."

If the flesh was made one with the divinity, it is no longer counted as a second nature. To count it as "two" is to undo the union and create two Christs.