[ansel12]

Where would you classify Jehovah's Witnesses? Mormons? Oneness Pentecostals? (Catholics don't consider any of them as Christian at all...because of the rejection of the Trinity as defined by the First Council of Nicea...not sure about "non-Catholic Christians" though)

I know that all Christian denominations agree on Mormonism as being a different religion from Christianity (non-Christian), and I am pretty sure that they all agree on the Jehovah Witnesses, I believe it is always mentioned alongside Mormonism whenever I look up various denominations statements on Mormonism.

[markomalley]

What about Oneness Pentecostals? (and other groups that are not Trinitarian)