You are misguided and ignorant of gospel truth.<quoted text>
The gospel could not have been preached to the dead because the dead do not know anything.
Revised Standard Version Catholic Edition (RSVCE)
5 For the living know that they will die, but the dead know nothing...
Our God is the God of the living.
"After six days Jesus took Peter, James, and John and led them up a high mountain apart by themselves.
And he was transfigured before them, and his clothes became dazzling white, such as no fuller on earth could bleach them.
Then Elijah appeared to them along with Moses, and they were conversing with Jesus."