1) Where does this record show that "it was God who brought Samuel up"?
The fact that it was Samuel, as shown in the story, and that he gave Saul prophecies that a demon would not know. This shows that it was God who brought Samuel up.
2) The record says that God would not answer Saul by the prophets (which Samuel was) and Saul even said (paraphrased) God has turned away from me and no longer answers me. As I asked before, why would God answer Saul through a dead prophet, in a manner that God considers detestable, an abomination?
This is how the conversation went between Samuel and Saul:
1Sam 28:15 Samuel said to Saul, “Why have you disturbed me by bringing me up?”
“I am in great distress,” Saul said. “The Philistines are fighting against me, and God has departed from me. He no longer answers me, either by prophets or by dreams. So I have called on you to tell me what to do.”
16 Samuel said, “Why do you consult me, now that the Lord has departed from you and become your enemy? 17 The Lord has done what he predicted through me. The Lord has torn the kingdom out of your hands and given it to one of your neighbors—to David. 18 Because you did not obey the Lord or carry out his fierce wrath against the Amalekites, the Lord has done this to you today. 19 The Lord will deliver both Israel and you into the hands of the Philistines, and tomorrow you and your sons will be with me. The Lord will also give the army of Israel into the hands of the Philistines.”
As you can see, God is not answering Sauls question but is telling him what he already knows about being rejected as King. Then Samuel gives the prophecy about Saul and his sons dying in the battle and being with him (Samuel).
And God thinking that this sort of mediumship is wrong for people to do did not change the fact that Saul went to a medium and that the medium did what she was going to do.
3) Saul went to a medium to get an answer which should tell you that what was happening was ungodly because God forbade people to communicate with the dead (Deut. 18:9-14) and that such practices defiled a person in the eyes of God (Lev. 19:31). The witch said, "I see a god coming up out of the earth" ("gods" KJV). A false god (demon) in the appearance of Samuel, manifesting itself in the form of Samuel, impersonating the dead.
The woman was just describing what she saw in the best way she know how. A divine being, a god, a ghostly figure etc is some of the translations. That description has nothing to do with who came up,,,,,,,,,,,,, the one consistently called Samuel and who gave true prophecy and did not answer Saul's question.
4) Saul had sinned so badly, he and his troops were not being protected by God - (Lev. 20:6 If a person turns to mediums and necromancers, whoring after them, I will set my face against that person and will cut him off from among his people.)
Maybe going to the medium was the last straw and God decided to kill Saul because of that.
5) If Saul went to war against the Philistines, his death, and the death of the royal family, was pretty much inevitable so that outcome was not so hard to predict!
So a prophecy saying that both Saul and his sons were going to die and Israel lose against the Philistines was easy to predict.
Dead means dead, to die means to die and to be dead is to be no longer living. You can add as many "BUTS" as you want but scripture is clear a person is dead until the resurrection.
Dead is dead, I cannot deny it. But what the first death is, that is what is being discussed.
Certainly the second death is the destruction of soul and body, but the first death, that of the body, means that the soul (the part that then is the totality of the person) goes and waits for the resurrection and judgement. Their plans are gone, their reward is no more, people forget them, they forget everything probably, they no longer go and worship God publically, they seem to be sleeping but may be able to stir themselves at times, some of them are comforted and some are tormented.
The resurrected person is not a copy but is the actual person in another body. (the soul has a body, the body and spirit are the soul of a living person, the spirit seems to be the soul of a dead person)
There are many scriptures which show that we have a spiritual part that leaves the body at it's death. Do you want me to find some for you? It might help you to use your creativity and make up reasons why they don't mean what they say.