When Newton was made a fellow of the College, along with an agreement to embrace the Anglican faith, the Trinity fellowship also required ordination within 8 years. During his studies Newton had come to believe that the central doctrine of the church, the Holy and Undivided Trinity was a pagan corruption imposed on Christianity in the fourth century by Athanasius. Newton was faced with an enormous dilemma. He now felt that, in all consciousness, he could no longer take holy orders. However, to give the reason for this would have led to his immediate expulsion from Cambridge.
Newton's laws of motion contradicted the accepted biblical doctrine in the same way that Galileo's views had. But rather than contradicting the Bible, Newton believed that the Bible was accurate and that it was the interpretation of theologians that was wrong. He continued to study biblical prophecy until his death, being fascinated by its symbols and developing a lexicon of prophetic emblems. He was also intrigued by the architecture of the Jerusalem Temple, believing it to hold the secrets to many unanswered questions of the Bible.
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History of the Chrisitan Trinity
History of the Christian Trininy (Notes)
How Did the Trinity Doctrine Develop?