Trick or treating and wearing costumes were first done by the Druids to keep themselves safe from evil spirits?
Bobbing for Apples was done to obtain favor with the evil spirits. People would kneel around a tub of water filled with apples. The first person to get an apple without using their hands, would have good luck and favor from the spirits for the coming year.
Bonfires originally came from these nights of human and animal sacrifices where they would throw the remains of the bodies into the fire. The next morning all that was left were ashes and bones- thus the name bonefIres- bonfIres.
If this information is not enough, here are 10 more reasons that Kerby Anderson, an author, broadcaster and CEO of a Christian Think Tank Ministry, gives us.