If the Trinity is false, it dishonors God to say, as noted in the book Catholicism: “Unless [people] keep this Faith whole and undefiled, without doubt [they] shall perish everlastingly. And the Catholic Faith is this: we worship one God in Trinity.”

Monsignor Eugene Clark says: “God is one, and God is three. Since there is nothing like this in creation, we cannot understand it, but only accept it.” Cardinal John O’Connor states: “We know that it is a very profound mystery, which we don’t begin to understand.” And Pope John Paul II speaks of “the inscrutable mystery of God the Trinity.”

Thus, A Dictionary of Religious Knowledge says: “Precisely what that doctrine is, or rather precisely how it is to be explained, Trinitarians are not agreed among themselves.”

We can understand, then, why the New Catholic Encyclopedia observes: “There are few teachers of Trinitarian theology in Roman Catholic seminaries who have not been badgered at one time or another by the question, ‘But how does one preach the Trinity?’ And if the question is symptomatic of confusion on the part of the students, perhaps it is no less symptomatic of similar confusion on the part of their professors.”

The truth of that observation can be verified by going to a library and examining books that support the Trinity. Countless pages have been written attempting to explain it. Yet, after struggling through the labyrinth of confusing theological terms and explanations, investigators still come away unsatisfied.

In this regard, Jesuit Joseph Bracken observes in his book What Are They Saying About the Trinity?: “Priests who with considerable effort learned . . . the Trinity during their seminary years naturally hesitated to present it to their people from the pulpit, even on Trinity Sunday. . . . Why should one bore people with something that in the end they wouldn’t properly understand anyway?” He also says: “The Trinity is a matter of formal belief, but it has little or no [effect] in day-to-day Christian life and worship.” Yet, it is “the central doctrine” of the churches!

Catholic theologian Hans Küng observes in his book Christianity and the World Religions that the Trinity is one reason why the churches have been unable to make any significant headway with non-Christian peoples. He states: “Even well-informed Muslims simply cannot follow, as the Jews thus far have likewise failed to grasp, the idea of the Trinity. . . . The distinctions made by the doctrine of the Trinity between one God and three hypostases do not satisfy Muslims, who are confused, rather than enlightened, by theological terms derived from Syriac, Greek, and Latin. Muslims find it all a word game. . . . Why should anyone want to add anything to the notion of God’s oneness and uniqueness that can only dilute or nullify that oneness and uniqueness?”

“Not a God of Confusion”

HOW could such a confusing doctrine originate? The Catholic Encyclopedia claims: “A dogma so mysterious presupposes a Divine revelation.” Catholic scholars Karl Rahner and Herbert Vorgrimler state in their Theological Dictionary: “The Trinity is a mystery . . . in the strict sense . . . , which could not be known without revelation, and even after revelation cannot become wholly intelligible.”

And a Catholic authority says that the Trinity “is not . . . directly and immediately [the] word of God.”—New Catholic Encyclopedia.

The Catholic Encyclopedia also comments: “In Scripture there is as yet no single term by which the Three Divine Persons are denoted together. The word τρίας [triʹas] (of which the Latin trinitas is a translation) is first found in Theophilus of Antioch about A. D. 180. . . . Shortly afterwards it appears in its Latin form of trinitas in Tertullian.”

However, this is no proof in itself that Tertullian taught the Trinity. The Catholic work Trinitas—A Theological Encyclopedia of the Holy Trinity, for example, notes that some of Tertullian’s words were later used by others to describe the Trinity. Then it cautions: “But hasty conclusions cannot be drawn from usage, for he does not apply the words to Trinitarian theology.”

How Did the Trinity Doctrine Develop?

AT THIS point you might ask: ‘If the Trinity is not a Biblical teaching, how did it become a doctrine of Christendom?’ Many think that it was formulated at the Council of Nicaea in 325 C.E.

That is not totally correct, however. The Council of Nicaea did assert that Christ was of the same substance as God, which laid the groundwork for later Trinitarian theology. But it did not establish the Trinity, for at that council there was no mention of the holy spirit as the third person of a triune Godhead.

Constantine’s Role at Nicaea

FOR many years, there had been much opposition on Biblical grounds to the developing idea that Jesus was God. To try to solve the dispute, Roman emperor Constantine summoned all bishops to Nicaea. About 300, a fraction of the total, actually attended.

Constantine was not a Christian. Supposedly, he converted later in life, but he was not baptized until he lay dying. Regarding him, Henry Chadwick says in The Early Church: “Constantine, like his father, worshipped the Unconquered Sun; . . . his conversion should not be interpreted as an inward experience of grace . . . It was a military matter. His comprehension of Christian doctrine was never very clear, but he was sure that victory in battle lay in the gift of the God of the Christians.”

What role did this unbaptized emperor play at the Council of Nicaea? The Encyclopædia Britannica relates: “Constantine himself presided, actively guiding the discussions, and personally proposed . . . the crucial formula expressing the relation of Christ to God in the creed issued by the council, ‘of one substance with the Father’ . . . Overawed by the emperor, the bishops, with two exceptions only, signed the creed, many of them much against their inclination.”

Hence, Constantine’s role was crucial. After two months of furious religious debate, this pagan politician intervened and decided in favor of those who said that Jesus was God. But why? Certainly not because of any Biblical conviction. “Constantine had basically no understanding whatsoever of the questions that were being asked in Greek theology,” says A Short History of Christian Doctrine. What he did understand was that religious division was a threat to his empire, and he wanted to solidify his domain.

None of the bishops at Nicaea promoted a Trinity, however. They decided only the nature of Jesus but not the role of the holy spirit. If a Trinity had been a clear Bible truth, should they not have proposed it at that time?

Further Development

AFTER Nicaea, debates on the subject continued for decades. Those who believed that Jesus was not equal to God even came back into favor for a time. But later Emperor Theodosius decided against them. He established the creed of the Council of Nicaea as the standard for his realm and convened the Council of Constantinople in 381 C.E. to clarify the formula.

That council agreed to place the holy spirit on the same level as God and Christ. For the first time, Christendom’s Trinity began to come into focus.

Yet, even after the Council of Constantinople, the Trinity did not become a widely accepted creed. Many opposed it and thus brought on themselves violent persecution. It was only in later centuries that the Trinity was formulated into set creeds. The Encyclopedia Americana notes: “The full development of Trinitarianism took place in the West, in the Scholasticism of the Middle Ages, when an explanation was undertaken in terms of philosophy and psychology.”

The Athanasian Creed

THE Trinity was defined more fully in the Athanasian Creed. Athanasius was a clergyman who supported Constantine at Nicaea. The creed that bears his name declares: “We worship one God in Trinity . . . The Father is God, the Son is God, and the Holy Ghost is God; and yet they are not three gods, but one God.”

Well-informed scholars agree, however, that Athanasius did not compose this creed. The New Encyclopædia Britannica comments: “The creed was unknown to the Eastern Church until the 12th century. Since the 17th century, scholars have generally agreed that the Athanasian Creed was not written by Athanasius (died 373) but was probably composed in southern France during the 5th century. . . . The creed’s influence seems to have been primarily in southern France and Spain in the 6th and 7th centuries. It was used in the liturgy of the church in Germany in the 9th century and somewhat later in Rome.”

So it took centuries from the time of Christ for the Trinity to become widely accepted in Christendom. And in all of this, what guided the decisions? Was it the Word of God, or was it clerical and political considerations? In Origin and Evolution of Religion, E. W. Hopkins answers: “The final orthodox definition of the trinity was largely a matter of church politics.”