As to what does OSAS mean? I don’t know. The only people I’ve ever heard use the term are catholics on this forum.
Methinks you’re being rather coy, Calgar. It’s pretty clear that OSAS refers to the doctrine of eternal security of one’s salvation. That is, that
true believers never lose their salvation.
I’ve always thought that the protestant evangelical’s statement regarding eternal security is a non sequitur:
All true believers who persevere to the end will go to Heaven.
I am a true believer who will persevere to the end.
Therefore, I will be in Heaven.
If a “true believer” is one who perseveres to the end, then of course, a justified/sanctified person who perseveres to the end will “always be saved.” But how does this inform believers?
About a month ago I listened to a Southern Baptist preacher describe the assurance of salvation. He started out - “you can be sure of your salvation!” And then he went on to describe
regeneration,
repentance,
justification, and
sanctification. Well, my response was, if you are absolutely certain that nothing in the future will prevent you from persevering to the end, and you are absolutely certain that you will continue to grow in moral and spiritual maturity, and you are absolutely certain that you will pass from this earth at a moment when you are not in a “back-slidden” state, then it seems you possess a unique spiritual gift and can indeed predict your own glorification.
However, I am skeptical of anyone that can predict his or her own divine glorification; therefore, I hope for salvation in the same way Paul hoped for his…