This video is geared towards believers. Unbelievers can (and do) do anything they want. There are no rules.
As a believer, can anyone name something Godly about halloween?
There's nothing Godly about combing our hair, driving a car, wearing cloths, hunting, fishing, following laws, Labor day, using toilet paper, veterans day, forth of july, washing dishes... you can not do anything physically or metaphorically Godly... or UnGodly.
