“Unitarianism as a theological movement began much earlier in history; indeed it antedated Trinitarianism by many decades. Christianity derived from Judaism and Judaism was strictly Unitarian. The road from Jerusalem to Nicea was scarcely a straight one. Fourth-century Trinitarianism did not reflect accurately early Christian teaching regarding the nature of God; it was, on the contrary, a deviation from this teaching.”
(”Unitarianism,” Encyclopedia Americana, 1956, Vol. 27, p. 294L)
Walk on by or verify?