“but He doesn’t”
Says you. Many others would say otherwise and with good cause: Scroll down to the hand print photos: http://www.traditioninaction.org/religious/e048-Museum_1.htm
“and he makes clear that the dead are dead and do not come back.”
They don’t come back to life in this world - unless raised by God as Jesus raised people in the NT. That doesn’t mean God doesn’t use the dead.
“It’s the devil that conjures up spirits to pretend to be the dead to trick you.”
Except they’re not spirits “conjured” up and they’re not tricking me.
No....says God’s Word. Read it and you’ll see for yourself.