How do Roman Catholics believe in purgatory when no other christians (including Orthodox) believe in it?
Actually you are wrong about the Greeks (Orthodox). There are some differences in the belief but both believe. The Orthodox argument is the Western description of purgatorial fire while the Orthodox describe the process of purgation as an absence and deprivation of divine light. Western theologians are moving more towards the Greek teaching and the Greeks are acknowledging that there may be more to purgation than just an absence of the divine. Most Protestants do not even address the issue in a scholarly way but for the most part ignore the problem that is solved theologically by the Doctrine of Purgatory. They simply assume that the problem of a sinful soul is solved in some way by Christ’s sacrifice but there is no support for such a theological conclusion. Here is some information about Purgatory from my blog: There is a common Protestant misunderstanding of purgatory. At least one protestant minister, John Wesley, spoke of perfectionism in this life, possible but rare. He is one of
