The OP asks if the Trinity can be proven by the Bible. The answer to that question, is NO, IT DOES NOT. Neither the Bible, Jesus, nor His disciples ever taught the Trinity.
Surprising admissions that the Trinity is not taught from the Bible!
Shocking Admissions by Joel Hemphill
http://www.ucg.org/booklet/god-trinity/trinity-biblical/
It may surprise you to learn the doctrine of the Trinity was never taught by Jesus, His disciples or can it be taught from the Bible.
Notice these admissions from a number of reputable sources and authors who, while themselves affirming the Trinity, acknowledge that the word "Trinity" and the doctrine is not found in the Bible.
The International Standard Bible Encyclopedia acknowledges that "'trinity' is a second-century term found nowhere in the Bible, and the Scriptures present no finished trinitarian statement" (1988, Vol. 4, "Trinity," p. 914). It further states that "church fathers crystallized the doctrine in succeeding centuries"—long after the apostles had passed from the scene.
The HarperCollins Bible Dictionary tells us, "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 NT [New Testament]" (Paul Achtemeier, editor, 1996, "Trinity").
The Harper Collins Encyclopedia of Catholicism states: "Today, however, scholars generally agree that there is no doctrine of the Trinity as such in either the OT [Old Testament] or the NT [New Testament] . . . It would go far beyond the intention and thought-forms of the OT to suppose that a late-fourth-century or thirteenth-century Christian doctrine can be found there . . . Likewise, the NT does not contain an explicit doctrine of the Trinity" (Richard McBrien, general editor, 1995, "God," pp. 564-565).
The New Encyclopaedia Britannica, in its article on the Trinity, explains: "Neither the word Trinity nor the explicit doctrine appears in the New Testament . . . The doctrine developed gradually over several centuries and through many controversies . . . It was not until the 4th century that the distinctness of the three and their unity were brought together in a single orthodox doctrine of one essence and three persons" (1985 edition, Micropaedia, Vol. 11, p. 928).
The New International Dictionary of New Testament Theology points out that "primitive Christianity did not have an explicit doctrine of the Trinity such as was subsequently elaborated in the creeds of the early church" (Colin Brown, editor, Vol. 2, 1976, "God," p. 84).
Historian and science fiction writer H.G. Wells, in his noted work The Outline of History, points out, "There is no evidence that the apostles of Jesus ever heard of the trinity—at any rate from him" (1920, Vol. 2, p. 499).
Martin Luther, the German priest who initiated the Protestant Reformation, conceded, "It is indeed true that the name 'Trinity' is nowhere to be found in the Holy Scriptures, but has been conceived and invented by man" (reproduced in The Sermons of Martin Luther, John Lenker, editor, Vol. 3, 1988, p. 406).
The Oxford Companion to the Bible states: "Because the Trinity is such an important part of later Christian doctrine, it is striking that the term does not appear in the New Testament. Likewise, the developed concept of three coequal partners in the Godhead found in later creedal formulations cannot be clearly detected within the confines of the canon [i.e., actual Scripture]" (Bruce Metzger and Michael Coogan, editors, 1993, "Trinity," p. 782).
Professor Charles Ryrie, in his respected work Basic Theology, writes: "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" (1999, p. 89).
Ryrie goes on to state: "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" (p. 90).
Millard Erickson, research professor of theology at Southwestern Baptist Theological Seminary, writes that the Trinity "is not clearly or explicitly taught anywhere in Scripture, yet it is widely regarded as a central doctrine, indispensable to the Christian faith. In this regard, it goes contrary to what is virtually an axiom of biblical doctrine, namely, that there is a direct correlation between the scriptural clarity of a doctrine and its cruciality to the faith and life of the church.
"In view of the difficulty of the subject and the great amount of effort expended to maintain this doctrine, we may well ask ourselves what might justify all this trouble" (God in Three Persons: A Contemporary Interpretation of the Trinity, 1995,p. 12).
Professor Erickson further states that the Trinity teaching "is not present in biblical thought, but arose when biblical thought was pressed into this foreign mold [of Greek concepts]. Thus, the doctrine of the Trinity goes beyond and even distorts what the Bible says about God" (p. 20).
Professor Erickson later points out: "It is claimed that the doctrine of the Trinity is a very important, crucial, and even basic doctrine. If that is indeed the case, should it not be somewhere more clearly, directly, and explicitly stated in the Bible? If this is the doctrine that especially constitutes Christianity's uniqueness . . . how can it be only implied in the biblical revelation? . . . For here is a seemingly crucial matter where the Scriptures do not speak loudly and clearly.
"Little direct response can be made to this charge. It is unlikely that any text of Scripture can be shown to teach the doctrine of the Trinity in a clear, direct, and unmistakable fashion" (pp. 108-109). Later in this booklet we will consider various scriptures often used to support the Trinity doctrine.
Shirley Guthrie, Jr., professor of theology at Columbia Theological Seminary, writes: "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" (Christian Doctrine, 1994, pp. 76-77)."
Historic origins of the doctrine of the Trinity:
Is the Trinity Biblical
Is the Trinity Biblical
The Biblical description of God, Yahweh, and of Jesus, Y'Shua, is recorded in post #8 above.
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