Shame on you, you're not even close to being correct. I say shame, because I shouldn't even need to offer proof, any serious exegete knows that it's not taught, prophesied, effectuated in any manner throughout Scripture. Especially, and definitively the the way that all other major doctrines are (Gentiles into the Kingdom, abrogation of the Law, suffering Messiah).
In other words, even if I was a trintarian, i would be obligated to admit that much. Shame on you, can you not tell the difference?
Trinitarian Millard J. Erickson - Research Professor of Theology at S.W. Baptist Theological Seminary (Southern Baptist) in his book on the Trinity, "God in Three Persons"
"This doctrine in many ways presents strange paradoxes...It was the very first doctrine dealt with systematically by the church, yet is still one of the most misunderstood and disputed doctrines.
Further, it is not clearly or explicitly taught anywhere in Scripture, yet it is widely regarded as a central doctrine, indispensable to the Christian faith" (p. 11-12).
Professor Shirley C. Guthrie, Jr. - (Trinitarian scholar, in his best-selling book, "Christian Doctrine"):
"The Bible does not teach the doctrine of the Trinity. Neither the word "trinity" itself nor such language as 'one-in-three,' 'three-in-one,' one 'essence' (or "substance"), and three 'persons' is biblical language.
The language of the doctrine is the language of the ancient church taken from classical Greek philosophy" (p. 76-77).
Trinitarians Roger Olson and Christopher Hall - In their book, "The Trinity"
"It is understandable that the importance placed on this doctrine is perplexing to many lay Christians and students. Nowhere is it clearly and unequivocally stated in Scripture.
"The doctrine of the Trinity developed gradually after the completion of the N.T. in the heat of controversy.
The full-blown doctrine of the Trinity was spelled out in the fourth century at two great ecumenical councils: Nicaea (325 A.D.) and Constantinople (381 A.D.)" (p. 1-2).
Professor Charles C. Ryrie - Respected Trinitarian Evangelical Biblical scholar, in his well-known work "Basic Theology"
"In the second half of the fourth century, three theologians from the province of Cappadocia in eastern Asia Minor gave definitive shape to the doctrine of the Trinity" (p. 65).
"But many doctrines are accepted by evangelicals as being clearly taught in the Scripture for which there are no proof texts. The doctrine of the Trinity furnishes the best example of this.
It is fair to say that the Bible does not clearly teach the doctrine of the Trinity. In fact, there is not even one proof text, if by proof text we mean a verse or passage that 'clearly'
states that there is one God who exists in three persons" (p. 89). "The above illustrations prove the fallacy of concluding that if something is not proof texted in the Bible we cannot clearly teach the results...
If that were so, I could never teach the doctrine of the Trinity or the deity of Christ or the deity of the Holy Spirit" (p. 90).
Graham Greene - Noted Catholic scholar
"Our opponents sometime claim that no belief should be held dogmatically which is not explicitly stated in Scripture...but the Protestant churches have themselves accepted such dogmas as the Trinity,
for which there is no such precise authority in the Gospels."
Professor Cyril C. Richardson - "The Doctrine of The Trinity: A clarification of what it attempts to express"
"I cannot but think that the doctrine of the Trinity, far from being established, is open to serious criticism, because of both the modern understanding of the Scripture, and inherent confusions in its expression.
It is not a doctrine specifically to be found in the New Testament. It is a creation of the fourth-century Church" (p. 17). ...
"My conclusion then, about the doctrine of the Trinity is that it is an artificial construct.
... Professor Richardson is writing as a dedicated Trinitarian but he admits,
"much of the defense of the Trinity as a 'revealed' doctrine, is really an evasion of the objections that can be brought against it" (p. 16)
Harper-Collins Bible Dictionary - (1996 Edition):
"...Attempts to trace the origins still earlier to the Old Testament literature cannot be supported by historical-critical scholarship.
The formal doctrine of the Trinity as it was defined by the great Church Councils of the fourth and fifth centuries is not to be found in the New Testament."
Harper-Collins Bible Encyclopedia of Catholicism - (1995 Edition):
"Today, however, scholars generally agree that there is no doctrine of the Trinity as such in either the Old Testament or the New Testament
...It would go far beyond the intention and thought-forms of the Old Testament to suppose that a late-fourth century or thirteenth century Christian doctrine can be found there.
Likewise, the New Testament does not contain an explicit doctrine of the Trinity."
Encyclopedia International - (1982 Ed.; Vol. 18; p. 226):
"The doctrine of the Trinity did not form part of the apostles preaching as this is reported in the N.T."
New International Encyclopedia - (Vol. 23; p. 47, 477):
...The doctrine is not found in its fully developed form in the Scriptures. Modern theology does not seek to find it in the O.T.