Is the trinity a Living of God and man or just God alone, how dose trinity form in respect to Man, viewed?

The word Trinity is not in the Bible and is not a true Biblical view. In The Encyclopedia Americana we read: “Christianity derived from Judaism and Judaism was strictly Unitarian [believing that God is one person]. The road which led 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.” The teaching that God is one person is brought out in Deu 6:4 "Hear O Israel: The Lord our God is one Lord." This is reiterated by Jesus at Mark 12:29.