[
Replying to historia in post #1]
Throughout the years, I've learned that there are many 'christians' that don't believe in what I always thought was standard christainity: being saved, heaven/hell, rapture, judgement day, jesus is god but also man and sacrificed himself for humanity's innate sin that was derived from all that Adam and Eve business (for starters). I've also never considered JWs or Mormons 'christian' (though many do, but it's still debatable among some).
For me, when speaking to a large group of people, I have to whittle down 'christianity' to, basically: if they claim they're a christian, they're a christian no matter their beliefs.
That's not to say I believe them to be a christian simply by saying it (reading of some posts of 'christians' on here would lead me to believe not believing someone is a christian simply by claiming so is
more than a right choice).
But, by accepting one's christianity on their word, we run into issues with assumptions on both sides: I assumed you believed in XYZ; I assumed you knew I didn't believe in ABC.
The answer to your question, for me, is two fold:
a) How to answer here on the forum, &
b) How to answer in real life
As this is the forum (option a from above), I have to assume the basics as: god had a son named jesus that is a sacrifice to humanity; jesus died and rose again.
Assuming they believe more than that opens up a whole can o' worms that I, for you, don't care to open.