Doctrines of Salvation 2:132; “The Lord has so arranged his plan of redemption that all who have died without this opportunity shall be given it in the spirit world.”

Hebrews 4:1-3; “Let us therefore fear, lest, a promise being left us of entering into his rest, any of you should seem to come short of it.  2 For unto us was the gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them that heard it.  3 For we which have believed do enter into rest, as he said, As I have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world.”

This is a lot like purgatory.