Tree of Life: Why did God prevent Adam & Eve from eating from the "Tree of Life"? [Genesis 3, I Timothy 6:16]. Samuel's Spirit Raised Was the spirit of Samuel that was conjured up by Saul and the witch actually Samuel or was it a demon? [I Samuel 28:11-20]. Angels & Humans Having Children: How could spiritual beings have intercourse with human women and produce children? [Genesis 6:6].