Are they joking?

From the Family website:

http://www.thefamily.org/word/search/index.php3?selid=9&dir=forward

" The Bible says Satan is "the god of this World, who blinds the eyes of those who do not believe in God, to prevent the light of the Truth of God from shining unto them."--2Corinthians 4:3,4.

So it is vitally important for you, as a sincere seeker of Truth, to be very careful and discerning in your search for the realities of the Spirit World, lest you be hindered or deceived by the Devil or one of his lying spirits!"

One of his Lying spirits indeed!