Once again you are off track.
What I said had nothing to do with the possibility of losing spiritual life, everything to do with believing God's word as true. Are you forced to believe God's word is true or not? If not, which is what you claim, then you are free to not believe as equally as you can believe (or you are not free at all). Adam was spiritually alive just as we are and he knew God, spoke with Him face to face (that's more than you and I have done) and was free in every sense of the word (no corruption to lead him astray) yet still he chose to not believe.
Unless you are audacious enough to believe that everyone who disagrees with you does not belong to God, you can be wrong as much as you can be right. If what I have said to you in our discussions is right? You have effectively rejected God's word, for like you, I base what I say on the word of God. Being spiritually alive doesn't give you or me, or anyone here, the right to infallibility.
God promises to finish what He started, that means our salvation is absolutely guaranteed. What He doesn't promise is to reward us for the errors we make along the way and I guarantee you, one side in this debate is right or both sides are wrong.