–[ 17 MIN READ]Post Views: 508 Taken from the book: Is God a Trinity Historical Proof 1) The Trinity teaching originated in the latter half of the second century—a hundred years after the New Testament had been written and canonized 2) The Trinity doctrine was officially adopted at the Council of Constantinople in 381 AD. 3) A 4th-century … Continue reading A Summary of Proofs that God Is Not a Trinity