Arius did not deny the divinity of Christ so why would one of his followers? The answer of course is that Newton didn't deny the divinity of Christ while he certainly questioned Trinitarian doctrine at certain points of his life. But there were many Christians extant before Trinitarian doctrine ever existed. IOW's the two are not mututally exclusive, that being a belief in the divinity of Jesus of Nazareth and being agnostic on the trinity are not two inputs to an exor gate.
NIV Genesis 1:26
Then God said, "Let us make man in our image, in our likeness, and let them rule over the fish of the sea and the birds of the air, over the livestock, over all the earth, and over all the creatures that move along the ground."NIV Genesis 3:22
And the LORD God said, "The man has now become like one of us, knowing good and evil. He must not be allowed to reach out his hand and take also from the tree of life and eat, and live forever."
Thanks again!