It is written:
“Leviticus 19:31-‘Give no regard to mediums and familiar spirits; do not seek after them, to be defiled by them: I am the LORD your God.
“And the person who turns to mediums and familiar spirits, to prostitute himself with them, I will set My face against that person and cut him off from his people.” (Leviticus 20:6)
“So Saul died for his unfaithfulness which he had committed against the LORD, because he did not keep the word of the LORD, and also because he consulted a medium for guidance.” (1 Chronicles 10:13)
According to the Islamic Hadith, Muhammad was well-versed in necromancy (the summoning of the dead). For example, we are told:
“2.452: Narrated Ibn `Umar: The Prophet looked at the people of the well (the well in which the bodies of the pagans killed in the Battle of Badr were thrown) and said, “Have you found true what your Lord promised you?” Somebody said to him, “You are addressing dead people.” He replied, “You do not hear better than they but they cannot reply.”
Some former devout Muslims who have become disciples of Christ have written of the dark spiritual powers that Muhammad often conjured, and of his practices in this regard:
“Third, later revelations became more and more eccentric. At one point Muhammad claimed to speak to the dead. Questioned about the incident by his novice disciples, the prophet replied, “[The dead] hear me no less than you do, except that they are unable to answer me.” Muhammad not only claimed to communicate with the dead; he prayed for the dead at the cemetery of Baqi al Gharqad. Muslim scholars do not explain away this phenomenon. Rather, they believe that he was a psychic, endowed with heightened perception and sensitivity. One commentator says that communication between the living and the dead is an “indubitable fact.” (ERGUN MEHMET CANER EMIR FETHI CANER, Unveiling Islam: An Insider’s Look At Muslim Life And Beliefs, 337-341 (Kindle Edition); Grand Rapids, Michigan; Kregel Publications)
“Muhammad was deathly afraid of the source of the revelation, believing at first that he was possessed by an evil spirit, or jinn…Remember that the tortured prophet repeatedly believed himself to be demon possessed…Third, later revelations became more and more eccentric. At one point Muhammad claimed to speak to the dead. Questioned about the incident by his novice disciples, the prophet replied, “[The dead] hear me no less than you do, except that they are unable to answer me.” (Ergun Mehmet Caner & Emirr Fethi Caner, Unveiling Islam: An Insider Look At Muslim Life And Belief, 311-377 (Kindle Edition); Grand Rapids, Michigan; Kregel Publications).
The visions of Muhammad were not of a true angel from Heaven, but from demonic spirits that used him for their wicked ends.