The cup and the finger will be distributed among the spiritualists to sip the literal blood and to take a bite of the literal finger. This they say corresponds to the Christian Communion Service. The spiritualists have Mediums, which are the mediators who supposedly contact the dead during a seance. The spiritualist sits in a circle in a darkened room and follows the directions of the Medium. Thus, it is a form of Divination, which is the art of obtaining secret information from the spirit world.
Spiritualism is very real.
It is a tool used by Satan to delude and captivate people's souls. Anyone who does these things is detestable to the Lord, and because of these detestable practices the Lord your God will drive out these nations. They perish because they refused to love the truth and so be saved. For this reason God sends them a powerful delusion so that all will believe the lie and so that all will be condemned who have not believed the truth but have delighted in wickedness. And he performed great and miraculous signs, even causing fire to come down from heaven to earth in full view of men.