Not at all.
The scripture does not teach that anyone needs to believe God is a Trinity in order to be saved, nor does the scripture teach that God is a Trinity.
It took 300 years after Crist was crucified for man to formulate the doctrine of the Trinity.
The doctrine of the Trinity has been debated for 1700 years simply because it is not taught by scripture.
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History of Trinitarian Doctrines
This supplementary document discusses the history of Trinity theories. Although early Christian theologians speculated in many ways on the Father, Son, and Holy Spirit, no one clearly and fully asserted the doctrine of the Trinity as explained at the top of the main entry until around the end of the so-called Arian Controversy. (See 3.2 below and section 3.1 of the supplementary document on unitarianism.) Nonetheless, proponents of such theories always claim them to be in some sense founded on, or at least illustrated by, biblical texts.
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those developing the doctrine saw themselves as trying to build a systematic Christian theology on the Bible while remaining faithful to earlier post-biblical tradition. Many also had the aim of showing Christianity to be consistent with the best of Greek philosophy. But even if the doctrine had a non-Christian origin, it would would not follow that it is false or unjustified; it could be, that through Philo (or whomever), God revealed the doctrine to the Christian church. Still, it is contested issue whether or not the doctrine can be deduced or otherwise inferred from the Christian Bible, so we must turn to it.
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No trinitarian doctrine is explicitly taught in the Old Testament. Sophisticated trinitarians grant this, holding that the doctrine was revealed by God only later, in New Testament times (c.50–c.100) and/or in the Patristic era (c. 100–800). They usually also add, though, that with hindsight, we can see that a number of texts either portray or forshadow the co-working of the Father, Son, and Holy Spirit.
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The New Testament contains no explicit trinitarian doctrine. However, many Christian theologians, apologists, and philosophers hold that the doctrine can be inferred from what the New Testament does teach about God. But how may it be inferred? Is the inference deductive, or is it an inference to the best explanation? And is it based on what is implicitly taught there, or on what is merely assumed there?
Many Christian theologians and apologists seem to hold it is a deductive inference.
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