Since you are a believer in Sola Scriptura, the Bible only, where does it say anything about your idea as posted above, in the Bible?
1 chronicle 10:13
So Saul died for his transgression which he committed against the LORD, even against the word of the LORD, which he kept not, and also for asking counsel of one that had a familiar spirit, to enquire of it;”
It seem God did not like Saul when he try to speak to Samuel that not live on earth anymore