I would like to know whether the Samuel that came in I Samuel 28 is the real Samuel’s spirit (or) an evil spirit? - Maxwell
The short answer to your question is that yes, the being that the witch saw was a demon. It was not the godly prophet Samuel. How do we know this? Like most other things in the Bible, context matters greatly. There are two prevailing elements of context that should shape our thinking here.
Dead People Are Asleep
Despite popular belief, humans that die an earthly death are not immediately in heaven or in hell. They are not watching over us, not able to communicate with us or anything like that.
The Bible often calls death “a sleep”. For example, in the story of Lazarus (John 11), Jesus said, “Our friend Lazarus sleeps, but I go that I may wake him … “
Why did Jesus use the word “sleep”? Because when we are asleep, we know nothing until we wake up. The Bible says the same thing about death in Psalm 6:5. It explains there that the dead “know nothing and have no knowledge or remembrance.”
The closest human comparison we have to this state is that of being in a coma – having no consciousness of anything whatsoever. That is the state of dead people. Lazarus had been dead for four days before Jesus raised him (John 11:39). If his soul had been in heaven during this time, Lazarus could have told people about his experiences. But he said nothing. He could not talk about “out-of-the-body experiences” – simply because he did not have any.
1 Thessalonians 4:13-18 strengthens this context by talking about what will happen when Christ returns. It says that the very first people Jesus raises will be those who have previously fallen asleep [in Him in death].
Saul Consults a Witch
This being told Saul that they would shortly be together in the hereafter. So could an evil Saul join a godly Samuel in heaven? Or did the godly Samuel go to hell to join an evil Saul?
You didn’t ask this, but if we study Satan and his ways, both Satan and his demons are able to impersonate even God. And they have often done so. When they do, it is very confusing to men and women who aren’t grounded in God’s truth. But it is never confusing – or frightening – to those who are grounded in Christ (in Truth).