You often seem to say the same things we do yet with a slightly different slant. On the one hand you say the growing pains do not cause us to lose our salvation, whereas on the other you say some do lose it. So it really seems like you are saying two different things but trying to harmonize them, when the common ground is Christ Himself, Who said He would never forsake us.
It's the difference between 1) sinning because you are weak, stupid, foolish, and ignorant (
"meh"...<raises hand>), but all the while still believing, and trusting in, and loving God and his salvation, and 2) sinning because you do not care about or trust in the gracious gift of God's forgiveness anymore because you'd rather willfully indulge the lusts of the flesh.
Number 1 will
not cause you to lose your salvation--you still believe in and rely on the forgiveness of God for your sins that you commit in your growing up into the stature of Christ.
Number 2
will cause you to lose your salvation because you, through your contemptuous unbelief, no longer have access to the forgiveness of God to cover your sins (faith is how you access the forgiveness of God--Romans 5:2 NIV).
I don't think we're very far apart on this. I suspect the only real difference of doctrine we have between us is that I believe the true believer can go back to unbelief,
and you believe he can not. I TOTALLY respect that belief. It's not a dividing line between believers, IMO. Now if you believed that former believers still have eternal life......that's another story.