Ghosts Are Demons

For everyone about to say "the witch summoning Samuel at En-Dor," that was a God-mandated exception. In fact, the reason the medium was so horrified was because Samuel wasn't a demon, so she knew it had to have been God's doing. He did it to teach King Saul a lesson about going to someone other than God for an answer just because you didn't like what He said.

Another example in the Bible was the Transfiguration. God temporarily brought Moses and Elijah back to earth to display Jesus' glory and divinity before taking them both back to Heaven.

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I don't trust mediums. At best they're cheating you and other people because they just want your money, at worst they're collaborating with demons.

But if I die and go to Heaven, and I see that my loved ones are distraught over my death, might God allow me to visit them on Earth and console them, perhaps accompanied by an angel or even Jesus Christ?