The purgatory is a corruption of an early church belief: when Christ returns, his thousand years reign with his brothers is a baptism of fire unto those who are wicked. If you were to happen in that Gehenna
Then you’re a protestant, because the existence of Purgatory is a dogma of the Catholic Church, and there are strong biblical proofs of its existence implicitly in 2 Maccabees 12:46, Revelation 21:27, Matthew 12:32 and Luke 12:59, all of which refer to or imply redemption after death, which is not possible in Heaven -or- in Hell.
However, I believe that the existence of Purgatory can be arrived at with only a basic understanding of Christian theism; even if there were no bible at all.
The following simple line of reasoning demonstrates how…
What happens to the people who haven’t rejected God, but aren’t quite ready for Heaven either?
The very fact that such people do exist is an obvious indication that -something- exists between these two states; either a state of existence; a place where they stay for a certain period of time, or a process to prepare them for Heaven. Since God’s goal is to take as many people to Heaven as possible, his plan for all the people in that state or process would naturally be to prepare them for Heaven.
Now, here, again, we need to draw just a couple more conclusions.
Premise 1: The people who aren’t quite ready for Heaven are perfected by God through some means before they get there.
Premise 2: God does not perfect anyone against their will.
Premise 3: All of the people who didn’t end up in Hell choose to go along with God’s plan.
Conclusion 1: Therefore, the process which God uses on these people goes along with their will.
Conclusion 2: This, in turn, proves that the people involved in this process are still able to have a will.
Conclusion 3: Therefore, they are conscious of at least some of their surroundings.
Conclusion 4: Therefore, they are in some state, and not a mere process of which they are unaware.
Final Conclusion: There is a third state between Heaven and Hell, in which God prepares those who want to do his will, but who aren’t yet perfected. This place is referred to, in Catholic theology, as Purgatory.
Beware of rejecting Purgatory. It’s good news for everyone who isn’t yet perfect, and the rejection of it has always been very bad news, ever since it inspired Martin Luther to rebel against the church, out of which sprang Protestantism, our of which sprang the philosophical “enlightenment,” out of which sprang secularism, out of which sprang modernism, out of which sprang rampant immorality and misery, and finally, the popularity of agnosticism and atheism, in a most unhappy world. The vast majority of the ills of modern man descend, as in a family tree, from the rejection of Purgatory. Be careful in these waters.