SPIRIT

Explain the spirit that appeared to Saul, doesn't this prove life after death immediate...?
1 Samuel 28:7,11, "Then said Saul unto his servants, Seek me a woman that hath a familiar spirit, that I may go to her, and enquire of her. And his servants said to him, Behold, there is a woman that hath a familiar spirit at Endor. "Then said the woman, Whom shall I bring up unto thee? And he said, Bring me up Samuel."
Many use this passage to prove life after death is immediate because the woman appeared to conjure the prophet Samuel from the grave. Basic reality here is, Saul sought counsel of a witch. It wasn't Samuel he saw in the spirit. It was a demon. There are many reason this is so. First of all we are told in God's Word not to seek counsel of witches. Therefore, Satan was already in control here.
Deuteronomy 18:10 There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch,
Plus, the demon impersonating Samuel claimed the witch had the power to raise him, yet we know by God's Word in numerous areas that only the Lord Himself can do this. For only Jesus Christ has the power of "the resurrection and the life" (John 11:25) NOT witches or demons. Another distinguishing fact here is that the demon gave a bogus prophecy. If it had been of the Lord, or even Samuel himself, who was a holy man, the prophecy would not have failed. The demon said, "Tomorrow shalt thou and thy sons be with me". (1 Samuel 28:19) Besides the fact that Samuel is not "in Heaven" yet according to the order by which all men gain Heaven. Scriptures tells us that Saul appears to have grieved away the Holy Spirit of the Lord in his latter years. If that demon was truly Samuel, then he would have known Saul was not worthy of Heaven. Saul died lost. Yet the "real" Samuel died a prophet of God and a saved man. So...The Truth here is the devil can manifest in a bevy of ways to confuse the one looking on. In fact Satan can do just about anjything he can get permission to do. 2 Corinthians 11:14 says, "And no marvel; for Satan himself is transformed into an angel of light." This "spirit" that Saul looked upon was merely one of those manifestations of Satan.
 Stick to God and he will stick to you- do not look for familiar spirit.  

http://www.remnantofgod.org/immortal.htm