I thought it was clear that they don’t This is perhaps the most obvious and clear-cut difference between Lutherans and Reformed on the question of grace, and it affects the other points (predestination doesn’t have the same central role in soteriology that it does for the Reformed, because to be justified by faith and regenerate does not, as in Reformed theology, imply that one is among the elect).
Btw, Calvinist do not believe in OSAS. We believe by the grace of God and the power of the Holy Spirit we will endure until the end, receiving our prize.
The latter teaches that although you apostate, you will still go to heaven. So it doesn’t matter how much evil you do, or if you walk away from the faith and forsake Christ, you still go to heaven.
We have no such do doctrine.
That’s a bit of a caricature. I understand why you want to distinguish yourselves from this antinomian heresy, but it’s hard to find a church where such a view of OSAS is formally taught. Southern Baptists have been known to endorse it, for sure, but I think one will look in vain for any official statement to that effect.
Of course, those who want to believe in OSAS/perseverance without the other points are in a dilemma, because if you affirm free will in an Arminian sense then it does seem to follow that a person could first believe and then choose to fall away, and OSAS would dictate that such a person is still saved. However, in my experience most who believe in OSAS would express it in terms of perseverance by saying that a true believer won’t want to sin and will eventually feel God calling them back or whatever.So I’m not sure the distinction you’re making is quite as clear-cut as you’re making it sound. That being said, the full-blown Reformed certainly have a much more consistent basis for holding to the final salvation of all who have once been regenerate without falling into antinomianism!
(I grew up as a Wesleyan Holiness kid surrounded by Southern Baptists, so arguing OSAS is actually how I first became addicted to theological argument.)