Trinitarian heresies usually stumble over who Christ is. Without fail, these heretical groups, sects and movements brand themselves as “renewal movements.” God gave us the Scriptures but, alas, things went haywire after the apostles died. The church lurched into heresy bit by bit. These groups warn us that the Greeks influenced Christian thinking, and eventually this pagan philosophy corrupted our doctrine of God, and the church was in darkness. Until … (cue theme music) … someone read the Bible for himself and discovered The Truth (insert heresy now).
For example, Anthony Buzzard, a conservative Unitarian, writes,