Ramblinman wrote:One can no more be a non-trinitarian Christian than one can be an atheist Christian.
You might considering broadening your view a bit.
From,
http://en.wikipedia.org/wiki/NontrinitarianismWe can find the following listing:
Modern nontrinitarian Christian groups or denominations include
Christadelphians,
Christian Scientists,
The Church of Jesus Christ of Latter-day Saints,
Dawn Bible Students,
Friends General Conference,
Iglesia ni Cristo,
Jehovah's Witnesses,
Living Church of God,
Oneness Pentecostals,
Members Church of God International,
Unitarian Universalist Christians,
The Way International,
The Church of God International and the
United Church of God.
The same source also says,
Nontrinitarianism (or antitrinitarianism) refers to monotheistic belief systems, primarily within Christianity, which reject the mainstream Christian doctrine of the Trinity, namely, the teaching that God is three distinct hypostases or persons who are co-eternal, co-equal, and indivisibly united in one being or ousia.
My own studies into the matter have lead me to wonder how a single doctrine based on no definitive scriptural statement ever became the sine qua non mandatory doctrine of Christianity in the eyes of some denominations. How it is that a discription of the nature of God devised by men imputing meaning into scripture became regarded as being the definitive definition of being Christian.? How was it never questioned as being potentially inadequate to describe a being so great as God was ever accorded such status?
The Wikipedia article offers some good points to be considered.
I have met some people in my near 70 years who belonged to a few of the organizations in that list (which is not comprehensive by the way) Some groups in the list I would consider to be outrhght "cultic" in the pejorative sense, but others, I believe bear very little difference to clearly mainstream Christian denominations, Sharing many doctrines and practices, and differing on the trinity issue largely in viewing it as inaccurate or inadequate or simply unsupportable from a sola scriptura stand point.
It is plausible that one can make a better case that Melchisadek was God based on Heb 7, than one can make for the Holy Spirit. For which reason many suggest Melchisadec was a theophany of Jesus Christ so that they can persist in being trinitarians rather than quadratarians or saying the the Holy Spirit is not a person of the God head.
I think that there is enough shaky theology going on to not call someone heretic or non-Christian over the matter. We can wait and see what God says in the resurrection. I rather doubt that any sincere person is going to be thrown in the lake of Fire over the matter of not getting quite right something that is beyond human comprehension as much as God is.
I never met anyone that I could not learn something from.