Why do Christians say ghosts/mediums do not exist?
I watch those shows like Ghost Hunters and Long Island Medium. I wasn't sure what I believed or thought, but the more I watch, the more I think that there is "something"???, very broadly. And I've certainly had my own experience. It seems like Christians do not believe in ghosts or mediums. I'm not sure what it was based on, but it seems like that's what I heard. It gets lumped into the witchcraft category. I was amazed, the other night that mediums do indeed talk to the dead and that ghosts are real. I had wondered, but now I know they're wrong.
So what are they basing it on?
1 Samuel 28
His advisers replied, “There is a medium at Endor [doncha love that Star Wars used the name?].”
8 So Saul disguised himself by wearing ordinary clothing instead of his royal robes. Then he went to the woman’s home at night, accompanied by two of his men.
“I have to talk to a man who has died,” he said. “Will you call up his spirit for me?”
9 “Are you trying to get me killed?” the woman demanded. “You know that Saul has outlawed all the mediums and all who consult the spirits of the dead. Why are you setting a trap for me?”
10 But Saul took an oath in the name of the LORD and promised, “As surely as the LORD lives, nothing bad will happen to you for doing this.”
11 Finally, the woman said, “Well, whose spirit do you want me to call up?”
“Call up Samuel,” Saul replied.
12 When the woman saw Samuel, she screamed, “You’ve deceived me! You are Saul!”
13 “Don’t be afraid!” the king told her. “What do you see?”
“I see a god coming up out of the earth,” she said.
14 “What does he look like?” Saul asked.
“He is an old man wrapped in a robe,” she replied. Saul realized it was Samuel, and he fell to the ground before him.
15 “Why have you disturbed me by calling me back?” Samuel asked Saul.
“Because I am in deep trouble,” Saul replied [through the medium, I assume. Or did he hear him? It doesn't say]. “The Philistines are at war with me, and God has left me and won’t reply by prophets or dreams. So I have called for you to tell me what to do.”
Here is a link that might be useful: Link which reflects the beliefs I've heard.