A “convincing argument” has been made several times in this thread in response to lame Catholic assertions, even Augustine joined in on the festivities. So far they stand unmolested.
Oh yeah? A convincing argument convinces at least those that are making it. I see evidence all the time that Protestants do not actually believe it themselves. This is shown in their concern that some of their fellow Christians, presumably in a state of grace by accepting Christ, are being led astray by new age thinking, near-death experiences, Mormonism, liberalized "progressive" Christianity, Satanism, and of course the biggie Catholicism. Why the concern if you cannot fall out of grace? Are they not going to heaven anyway by the mere fact they at one time accepted Jesus Christ as their Savior?