>> How can the Roman Catholic lose what they’re not sure they have??
In either case your question is just a reverse of my question to you.....what can you do to earn your salvation?<<
Paul counseled that we must WORK OUT our salvation IN FEAR AND TREMBLING lest we who rashly assume we are saved find that we have been disqualified. But of course you already know that don’t you? Fact is, there are many passages of Scripture that teach those who claim to be Christians what being one actually requires. If you are unfamiliar with those teachings, don’t expect me to tutor you. Try reading your Bible once in awhile.
Ok....what WORK do you have to do??