Not sure who you are alluding is watching over our souls? Men of cloth in the mostly apostate churches? Nothing needs to prove the salvation which is the gift of God true! Jesus proved it true! Appearances can be deceiving. Yes good works follow when we are saved, but as Paul pointed out at least in a few stinkers, it did not follow much at all, and he said they would have to be killed to be saved, basically. Bodies die so that the spirit would live. God is working on us as He was on Peter, and the last thing anyone needs is some would be holy man or woman condemning them, because they seem to have less than total victory yet. God is the One working inside. I am tired of folks like you insinuating it is by works, and that if the works don't seem up to your standards, people were never really saved. Baloney. We will let Jesus judge that. His gift is not on again off again. The supposed eternal security some peddle is really eternal insecurity. 'Oh, if sister Wanda still smokes, and hasn't got a legal divorce yet (or insert any sin you like here) then she never was saved...blah blah.
Yes. I have seen some fall even that far! Yet in the end God usually works in their life and they learn from the experiences. Now maybe in some cases some on really never had their heart right, and some con game was being played, that is not my place to judge! Maybe God will even get them! Then there are these outwardly clean preachers that inwardly are hypocrites...that's another story....
There are oodles of verses about the gift of God being forever, and without repentance, and about His mercy and judgments etc. All He asks to start is that we come to Him, and sincerely ask for His free eternal gift. There is no guarantee that I know about we will all suddenly become sinless saints and wholly sanctified. Yes we can work on it. But remember the guy who fell seven times a day? That doesn't seem to indicate perfection. How about where Jesus said to forgive seventy times seven times? Why would a brother need that if we all were so spotless as some Calvinists seem to think we need to be? It is easy to point fingers, and catch some sinners that are saved living a less than some sinless sanctified life. Yes, many even fall. But though they fall they are not forsaken..ever! They will rise again! We just need to thank Jesus for His great mercy and gift, and realize we will never be perfect in this life! Peter denied for hours. Others may deny for years! We are woks of His in progress, not people that work up to some higher level of piousness.