The doctrine of Purgatory is the most misunderstood doctrine - especially to Protestants and anti-Catholics.
First of all, Purgatory isn’t necessarily a place, but a state. According to the Catechism of the Catholic Church, it’s a “final purification of the elect” (1030-1032). Another misconception is that Purgatory is a “second chance”. This is NOT the case, as those Christians who die in a state of mortal sin are not eligible because mortal sin severs our relationship with God.
Since Revelation 21:27 tells us that nothing unclean can enter heaven, a final purification or purgation is necessary for some before entering heaven. Those in Purgatory will indeed make it into heaven. As the great Protestant author, C.S. Lewis once stated, “The mercy of God demands purgatory.”
In 2 Macc. 42-46, we see that Judas Maccabeus prays for the men of his army, killed in battle. Verse 44 says, “… for if he were not expecting the fallen to rise again, it would have been useless and foolish to pray for them in death.”
Matt. 5:25-26 tells us that unless we have settled our matters, we will be “handed over to the prison guard and will not be released until we have paid the last penny.”
We are told in 1 Cor. 3:12-15 that the day (judgment) will disclose the foundation that a person builds upon and how it will be revealed: “If the work stands that someone built upon the foundation, that person will receive a wage. But if someone's work is burned up, that one will suffer loss; the person will be saved, but only as through fire.”
Additionally, Matt. 12:32 states, “whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come”, which indicates that there is purification after death for some. Matt. 18:32-35 and Luke 12:58-59 are additional verses that support this doctrine.
