Where is purgatory explained in the Bible? Thanks.
It is not explained in the Bible, but, like the Trinity and Transubstantiation, it satisfies certain conundrums presented by Scripture.
Purgatory is not a place or a time, it is a process in which the final purification is accomplished because nothing unclean will enter the presence of God in heaven (Rev. 21:27). Every Evangelical or Protestant who professes to be cleansed by the Blood of Jesus acknowledges the purgation of their sins.
Peace be with you.