Concerning church doctrine again, there is no mention in the Bible of a place called purgatory nor any description of such a concept. Also limbo is another that is neither mentioned or described as a place for babies that die before being baptized. These are teachings of men, "doctrines."
Terms such as trinity don't appear in the Bible either, but a Christian would certainly believe in the Father, Son, And Holy Spirit.
From my reading of the Bible I have interpreted and with the help of others studied passages that suggest a place between here and heaven, before the final day of judgement and resurrection, when all the souls in purgatory will be released and it will no longer exist.
Some examples - Jesus in the Gospel talks about this correction and indirectly Purgatory at the end of His parable on forgiveness:
And in anger his lord delivered him to the jailers (torturers), till he should pay all his debt. So also my heavenly Father will do to every one of you, if you do not forgive your brother from your heart. [Matt 18:34-35]
In this passage there is no mention of God punishing very serious sinners but only those who sin by not forgiving others. Also the punishment referred to here is not eternal as in hell (Mark 9:47-48 ) but only temporary - "till he should pay all his debt."
Cor 3:12-15 - Now if any one builds on the foundation with gold, silver, precious stones, wood, hay, stubble - each man's work will become manifest; for the Day will disclose it, because it will be revealed with fire, and the fire will test what sort of work each one has done. If the work which any man has built on the foundation survives, he will receive a reward. If any man's work is burned up, he will suffer loss,
though he himself will be saved, but only as through fire.
Purgatory is a temporary state for souls who need cleansing from the bad effects, mess, scandal and attachments (attraction to sin) still remaining sins. Such tainted souls, cannot enter heaven directly. As stated in the Bible: "But nothing unclean shall enter it (heaven)..." [Rev 21:27]. These souls need to be purged of all "uncleanness", no matter how slight before seeing God face to face (Rev 22:3-5). Eventually all souls in Purgatory will go to heaven.