Romans 14:5-8 "One person regards one day above another, another regards every day alike. Each person must be fully convinced in his own mind." If you can't celebrate halloween with a clear Conscious then don't. Anything not done in faith is sin. But if you want to, then do so. I don't think it's dominic, essentially with no Biblical backing to support it. And don't worry eating the candy neither Look at 1 Corinthians 8:4-5 a quote from it says "We know that an idol is nothing in the world"