Ok. So my religion teaches Heavenly Mother is a thing, with no scriptural basis at all
It's pretty much common sense. Does God have children? Yes. Do children come from parents? Yes. Are parents in heaven single? Well, that doesn't make any sense, so one must conclude that there is a mother in heaven. The scriptural basis is that God the Father is the father of spirits.
This cracks open a whole new debate that completely obliterates the foundation of our teachings. When we are resurrected, will we be married (if sealed in the temple)? For what purpose? Will we have offspring? Again, for what purpose?
Must I accept other people's input over my own?
Well, that is the problem. you accept no one's input but your own. But yes, you must accept other people's input over your own or you will never learn. No one is insisting that you have to accept everything they say, but you must accept their input or you're just a wall to bounce ideas off of. Learning is the process of evaluating input from others which you are very resistant to doing. You won't answer questions and when you get an answer, so far, all I see is rejection deferring again to your own conclusions.
So, show me in the scriptures where you confirmed that there is no mother in heaven. And that's only the tip of the iceberg of problems your theology has in relation to that of the church's. While we're at it, show us in the scriptures where you confirmed that God doesn't have a body of flesh and bone, where He isn't a resurrected being. It's going to be difficult because generally speaking, God doesn't tell us what he doesn't have or what isn't true. So, have fun with that verification process.
BTW, what's the 5th commandment? How do you know that's not talking about our mother in heaven? What makes you think you're right? Do you know everything that ever was? Can you be absolutely sure that God isn't talking about our mother in heaven? There is historical evidence that Israel worshiped a mother in heaven at the time that the commandment was given, so... you can't really know if it wasn't. It could have been about both sets of parents.
Is that our religion - to defy our our reasoning because a plausible man-made belief is spoken (due to tradition)?
I don't know what tradition you're referring to? I hardly believe the concept of a mother in heaven is tradition. Taking that tradition as an example, you're bothered because someone prior to you, used their reasoning faculties and concluded that there is a mother in heaven, but now that you're here, we can set that aside because you have reasoned that there isn't one. Thank you again for proving my point. If it wasn't for you, the church would be worshiping Mary right now.
Tell me why your reasoning is better than the tradition. I'd love to know.
I have the creativity and ability to actually see and understand another person's perspective and entertain how something might be plausible, even when I don't actually believe it myself.
Well pat yourself on the back and stick a feather in your hat! And I suppose I must accept that because you said it, right? Aren't there a lot of things that I've said that you disagree with? Where is the creative ability to actually see and understand my perspective? Excuse me if I don't believe you have either.
Maybe, premortality may not be as clearly stated as you think it is, otherwise, it would never be a topic of debate.
LOL. The only way it wouldn't be a topic of debate is if everyone agreed that it was so. There are many things that are clearly stated in the Bible and they are debated here every day. But the issue isn't about what everyone else believes. It's about what you believe and what you are arguing. Maybe if you had worded your opening line in a way that indicated that both sources are equally vague, we would be having this discussion but that's not what you said. It turns out, I previously called your post word salad, that no one can be certain what the point of your post was. I assumed it was about pre-mortality. Certainly, the title question was, but your post made no attempt to clarify what the answer was to that question.
the third paragraph in your OP further drowns the topic of pre-mortality suggesting that the Book of Mormon should clear up anything lost from the Bible, as if it should.
So is pre-mortality part of the gospel? If it is a "plain a precious truth" lost from the gospel, why isn't it talk about more in the Book of Mormon?
The problem here as I see it is that nothing concerning pre-mortal existence is missing from the Bible, so there's nothing to restore. Paul is pretty clear that God predestinated the Ephesians to be where they were in order to hear the gospel when they did. The Old Testament clearly states that God knew at least one other person before they were born. I have to wonder why there isn't a church built to this prophet so we can worship him like we do Christ because, obviously, that must be something special and should set him apart from the rest of us. The issue here isn't that the Book of Mormon restored something that was lost. The issue is that it never was lost. It is our critics who are lost, but you're looking, as I said, to find some kind of common ground by agreeing that it wasn't part of the gospel when clearly it was.
The idea of finding common ground where none exists (on this particular topic) isn't going to help. We either have the truth or we don't and you appear to believe that we don't because you keep compromising what we believe. And while I believe you mean well, It is destructive.
Moreover, I never stated I don't believe in pre-mortality, I'm removing it out of the equation to help my fellow Mormons understand that maybe we creating unnecessary work for ourselves by including into the gospel message.
Once again, proving my point. You're willing to compromise in order to help us understand that maybe we don't need to talk about the pre-existence. Well, was there a pre-existence or wasn't there? If there was, when do you think we should say something about it? Maybe you think we don't need to know about it ever. We call all be resurrected and be surprised!!! It really doesn't play in part in our salvation. It's not like we need to know who we are, right? After all, what does it mean to be the offspring of God? We can just make things up about it because it doesn't really matter.
This is why I take the time to correct your claims about what you believe when it doesn't align with what the church teaches.