What it IS NOT is 1 Cor. 3:15. Read the Scripture with the Spirit that indwells each believer, Who "searches all things,yea, the deep things of God" (1 Cor.2:10), and awaken from your slumber.
I showed you where the doctrine of purgatory is taught in the scripture, and as a bonus corrected your grasp of it, and you give me empty agitprop.