IMO, more like maintaining grace through obedience. Even scriptures mention those who fall away. Seeds strewn among rocks or weeds. Some roots are shallow and dry up. Some grow and are choked by weeds.
"IMO, more like maintaining grace through obedience."
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So in the RCC you could be saved today and if you don't do the right things tomorrow you could be lost. Who determines for you what works are sufficient to maintain your state of grace? What happens to the Catholic that dies while not in compliance with the works necessary to maintain their grace?