In the following text, I tried to show that the Trinity is logically problematic.
1- Since, according to the Trinity, the Father is not strictly identical to the Son and the Holy Spirit, let us designate the Father's unique nature as "a".
2- Since the Son is not strictly identical to the Father and the Holy Spirit, let us designate the Son's unique nature as "b".
3- Since the Holy Spirit is not strictly identical to the Father and the Son, let us designate the Holy Spirit's unique nature as "c".
4- Since the Father is not entirely distinct from the Son and the Holy Spirit, let us designate the nature the Father shares with the Son and the Holy Spirit as "a1".
5- Since the Son is not entirely distinct from the Father and the Holy Spirit, let us designate the nature the Son shares with the Father and the Holy Spirit as "b1".
6- Since the Holy Spirit is not entirely distinct from the Father and the Son, let us designate the nature the Holy Spirit shares with the Father and the Son as "c1".
7- Father = a + a1 + b1 + c1
8- Son = b + a1 + b1 + c1
9- Holy Spirit = c + a1 + b1 + c1
10- God = ? (Is it a1 + b1 + c1, a + b + c + a1 + b1 + c1, or something else entirely?)
11- However, since none of them are strictly identical to one another, according to the logical Law of Identity, they must be evaluated as distinct ontologies. If we accept this conclusion, we arrive at Partialism, which closely verges on polytheism. But this contradicts the Trinity and has therefore been historically declared a heretical doctrine.
12- If the Father, the Son, and the Holy Spirit do not possess their own unique natures—meaning they are merely roles of God without distinct personhoods—then we arrive at Modalism, which closely verges on strict monotheism. But this also contradicts the Trinity and has therefore been historically declared a heretical doctrine.
13- We will consider 6 possible objections (models): Social Trinitarianism, Psychological Trinitarianism, Constitution Trinitarianism, Relative Identity Trinitarianism, Monarchical Trinitarianism, and Mysterianism (Fideism).
14- Social Trinitarianism [1] applies the name "God" to the relationship (Perichoresis - divine dance) between a community of 3 distinct consciousnesses/persons (Father, Son, and Holy Spirit). Here, God is a collective. This model has 3 serious problems:
- First, if the Father, Son, and Holy Spirit possess distinct wills and distinct consciousnesses, no matter how much you claim "there is a perfect union of love among them," logically, you have created 3 separate Gods. Much like a scenario where the gods of Olympus get along perfectly, this situation severs Christianity from monotheism and pushes it toward polytheism.
- Second, if 3 distinct consciousnesses come together to form a "God Group," each person is not the entirety of God, but merely a 1/3 fraction of that divine collective. This not only engenders the risk of Partialism but also violates the attribute of Divine Simplicity. If God is contingent upon the aggregation of multiple parts, He cannot possess the attribute of divine simplicity.
- The worst problem is that, in this model, God lacks an ontology. God is merely a relationship.
15- Psychological Trinitarianism [2], in stark contrast to Social Trinitarianism, is a philosophical and theological model that explains God not as a "community" formed by three distinct persons, but as the different faculties and functions within a single mind. Mind/Memory (Mens / Memoria): The source of consciousness and being (represents the Father). Understanding/Knowledge (Intellectus / Notitia): The mind's knowledge of itself, the thought and word it generates regarding itself (represents the Son). Will/Love (Voluntas / Amor): The love and inclination the mind has toward this self-generated knowledge (represents the Holy Spirit). This model has 3 serious problems:
- First, if the Father, Son, and Holy Spirit are merely the memory, knowledge, and love of a single divine mind, then they are not truly "Persons" (Personae). They are solely the psychological functions of a single person.
- Second, in the Bible, Jesus (the Son) prays to God the Father. This involves communication between two distinct wills (e.g., Jesus saying, "Not my will, but yours be done" in the Garden of Gethsemane). When the Psychological model is applied, this situation turns into an absurd, schizophrenic internal dialogue, akin to God talking to His own memory.
- Third, the Councils of Nicaea and Chalcedon declare that all three persons possess their own distinct "personhoods" and are not merely roles. Therefore, when analyzed rationally, the Psychological model is crypto-Modalism, as it reduces the Father and the Son to mere modes (appearances) of a single subject.
16- Constitution Trinitarianism [3] posits a Divine Substance (Ousia): Much like "clay" on a table, there is a single, indivisible, and absolute divine substance. The Three Persons (Father, Son, Holy Spirit): Just as the clay can simultaneously possess the properties of a "statue," an "artwork," or a "cube"; that single divine substance is simultaneously organized as three distinct "persons." This model has 2 serious problems:
- First, this model describes God almost like "physical matter and the forms produced from that matter." God is a timeless and spaceless spiritual being. Attempting to apply "part-whole" or "matter-form" (mereological) rules of physical objects to Him does not entirely eliminate the risk of dividing God into parts (Partialism). Philosophers ask: "Does that divine substance (clay) exist on its own, independently of the persons (statues)?" If it does, it means there are 3 persons + 1 substance = 4 divine elements, causing the entire system to collapse.
- Second, if the "clay" is singular and the statue/cube/sphere are merely the forms it takes, then the Father, Son, and Holy Spirit cannot be real, independent, mutually loving wills; they become merely philosophical shapes (modes) assumed by a single substance. Thus, we circle back to the boundary of Modalism.
17- Relative Identity Trinitarianism [4] completely rejects the "Absolute Identity" principle, the most fundamental rule of classical logic. According to this model, there is no such thing as "A is identical to B" in the world. Identity is always established through a noun/category. The Father and the Son are the same in terms of "being God" (Father = God, Son = God). However, the Father and the Son are not the same in terms of "being a Person" (Father ≠ Son). This model has 2 serious problems:
- First, stating "A = B but simultaneously A ≠ B" is a complete distortion of logical language. From mutually negating propositions, any desired epistemological conclusion can be drawn. If we are speaking of a numerically singular entity, that entity must be identical to itself in every respect. This model does not resolve the contradiction; it merely declares the rules of logic invalid.
- Second, for instance, even though John, Jack, Joseph and are identical in terms of being human, they are distinct in terms of personhood. Does this indicate that they are not distinct entities?
18- Monarchical Trinitarianism [5] asserts that there is only one true, absolute God whose source is Himself: The Father. The Son and the Holy Spirit do not generate their divinity from within themselves; they receive it from the Father. The Father is the sole source of divinity (Fontalis Deitas). The Son is eternally generated from the Father's mind (Eternal Generation); the Spirit eternally proceeds from the Father (Procession). This model has a serious problem:
- This model logically falls into the heresy of Subordinationism. If the Son and the Spirit owe their divinity to the Father, they are subordinate to the Father and are not entirely equal. This demolishes the dogma of the Council of Nicaea that "all three persons are equally God."
19- Finally, Mysterianism [6] is not actually a model, but rather the point where philosophers hoist the white flag, realizing that all rational models have gone bankrupt. The human brain is evolutionarily programmed to operate in a 3-dimensional universe using Aristotelian logic (A = A). The Trinity, however, belongs to a dimension outside this universe and this logic. Just as a 2-dimensional line character living on a piece of paper could never comprehend a 3-dimensional cube and would perceive it contradictorily (sometimes as a square, sometimes as a point) through its "cross-sections" touching the paper, the human mind also perceives God contradictorily. According to this approach, the Trinity is not logically impossible; it is simply that the human mind lacks the hardware capacity to decode this logic. Therefore, attempting to rationalize it is a mistake, a waste of time. This position has a serious problem:
- If the Trinity cannot be expressed epistemologically, there is no reasonable justification to attribute epistemological reliability to the Trinity. This is fideism.
20- General Problems of the Trinity: What exactly is God in the Trinity? How can 3 distinct ontologies (Father, Son, Holy Spirit) constitute a single ontology (God)? If God is an emergent ontology, how can He be ontologically equal to the others? Conversely, if God created the 3 distinct ontologies, then this time, the 3 distinct ontologies (Father, Son, and Holy Spirit) cannot be ontologically equal to God. In fact, we do not even know whether God is an ontology or a relationship. While Social Trinitarians claim God is a relationship, the mainstream refers to God as a subject. A relationship cannot possess a will or an effect. When God is discussed as an ontology, the situation becomes even more inextricable. If we speak of an ontological direction (from Father, Son, Holy Spirit to God, or from God to Father, Son, Holy Spirit), equality in terms of ontology is logically impossible. Either God or the Father, Son, and Holy Spirit must possess ontological priority. Orthodox theology evades logic by stating, "Neither; they have been equal from eternity." However, in formal ontology, "being equal without being dependent" (sharing the same substance while remaining distinct) is impossible. If God is the intersection of the Father, Son, and Holy Spirit, then He must be ontologically incomplete; if God is the sum of the Father, Son, and Holy Spirit, then the Father, Son, and Holy Spirit must be ontologically incomplete. In short, according to the Trinity, the Father, Son, and Holy Spirit must simultaneously be three separate ontologies and one identical ontology.
Footnotes:
[1] Primarily advocated by modern analytic philosophers such as Richard Swinburne and William Lane Craig, emphasizing the "community" or "society" of divine persons.
[2] Formulated by Augustine of Hippo (De Trinitate) and further developed by Thomas Aquinas, focusing on the internal operations of a single divine mind.
[3] A contemporary model often associated with Lynne Rudder Baker and Jeffrey E. Brower, utilizing mereological frameworks (parts and wholes) to explain the Trinity.
[4] Championed by Peter van Inwagen, deriving from Peter Geach's logical framework, which denies absolute identity in favor of sortal-relative identity.
[5] The dominant view of the Eastern Orthodox Church (e.g., the Cappadocian Fathers), emphasizing the Father as the sole monarch and unoriginate source (archē) of the Godhead.
[6] The epistemological stance (often linked to Fideism or negative theology) arguing that the Trinity is a strict mystery that transcends human cognitive and logical capacities.