Jude 1:10

‘But these rail at whatever things they know not, and what they understand naturally, like the creatures without reason, in these things are they destroyed.'

But these foolish people, unlike Michael, think that they can treat the Devil lightly, because really they are ignorant of what they are dealing with. For while they think that they are spiritually knowledgeable, in fact they are spiritually ignorant, and as regards these things are like irrational creatures. Thus they should beware, or they may find themselves ensnared by him.

There is a warning here for us. We may laugh at the occult, and enter on it lightly. We may mock at the thought that ouija boards and tarot cards and similar things can be harmful. But by lightheartedly indulging in them we can be leaving a way open for evil spirits. And when they do enter the result can be devastating. The Devil loves nothing better than to be laughed at when he sees that it leaves him with an opening.