No, I don't believe in the Rapture. And if I'm correct, then yes, it is unBiblical for someone to hold this view. And if I'm wrong then I'm a heretic-at least on this matter.
There is only one scriptural truth. Every heretical doctrine leads you AWAY from God. The degree of the heresy and how many heretical doctrines you believe will lead you farther away from God. I have always believed this. Consequently I don't accept doctrine lightly and I do not accept things that I'm not 100% sure of. It was no small effort that I became a Reformer. As far as embracing an eschatology viewpoint, I have not fully made up my mind.
I don’t think anyone else has it all figured out either.
I sure don’t.
However, I think we respect a lot of one another’s Christianity—regardless of the relentless divisive assaults of some hereon.
That's a good approach (former sentence) and the same path I went to deepen my faith in my Church.
With the Reformed, I really, honestly do think that there are three deep issues at the core that are wrong and the first is actually threatening to the holder's faith in a Christian God -- you of course will disagree, but that's the way I see it:
you added in verses 19 and 20 in post 608, and you asked Now do you believe that the wicked can turn away from their wickedness without God's help? -- My answer is No.
God judges everyone according to their ways -- yes. However, note that this "their ways" can only happen if people have the free will to even HAVE "their ways".
God's grace is needed for us to turn to him, yes, but there is no proof for God pre-condeming pre-programmed people to hell -- God does not do that.