God can do anything he wants. If he wants to write my name in the book of life and blot it out later, there's not a thing I can do about it.
I can trust that he will not do it for the following reason:
My sheep hear my voice, and I know them, and they follow me: And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand. (Joh 10:27-28 KJV)
So that means that every Catholic, Orthodox and Protestant is going to heaven?
And who was tasked to feed the sheep?
Regards