A pastor I deeply respect, Steve Cioccolanti, gave a great caution in even invoking the term heresy. He says that term should be reserved for matters that are a salvation issue, something that would prevent someone from obtaining salvation. Too often, denominations have a long laundry list of beliefs and if you reject ANY of them, you are deemed a heretic.
I agree totally with that pastor. Actually, I think the vast majority of Christians would agree with him.
The issue is which "doctrines" get selected into the list of those "preventing someone from obtaining salvation".
This is where hot debates start.
I met a lady who believed that Christians upholding the scientific views on the evolution of the species, and not the 6-day creation account of Genesis, could not be saved because they were considering God a liar. They would burn in hell forever.
Take the case of Evangelicals' view on Mormons. Mormons do believe in the deity of Jesus, in his substitutionary atonement, in his bodily resurrection, in his Second Coming... and still, they are regarded as heretics because of their
other beliefs.
So, it seems it is not only about what you should believe, but also about what you
shouldn't believe, even if the wrong doctrines do not prevent you to believe in the right ones!
Are you a Christin heretic? No. You are a Christian apostate. I don't know why some (like me and
@Matthias) are called and others (like you) are not.
Perhaps because I am still new to the forum and most people haven't read what I wrote about my past.
In any case, you may find interesting that, for some "fundamentalist" evangelicals, I cannot be called technically an apostate. This is because I was Catholic, then Seventh Day Adventist, then Mormon.
Since none of those groups are considered to be truly "Christian" in their view,
technically I was never a Christian and therefore never an apostate !
I do believe I was an apostate when I became an atheist and lived for about 25 years without "fear of God".
Bahá'u'lláh took me back to Christ. So, although I do not consider myself Christian from a formal, academic point of view, I consider myself a Christian in a deeper sense: I love, honor and follow Christ.