do you think God isn't powerful or insightful enough to know your harmless intentions of dressing up for fun and getting free candy, or hanging out with good friends, and that you are not actually taking part in any blasphemous practices with your body, mind, or heart?
The problem really isn't that. It's...
Argument 1: some people will draw verses from the Bible where God says he condemns witchcraft, pagan rituals, or the like. They will argue that halloween embodies all of these things and by participating, you are inadvertently supporting those beliefs/practices.
Argument 2: some people will draw verses from the Bible where we are supposed to treat our bodies as temples unto God. So partaking in halloween can in a way perverse this holy "temple" that our bodies have become when became born again.
Argument 3: some people will draw verses where we are not supposed to act in a manner that may suggest an un-Christ-like nature. That means if we participate in the trick-or-treating and costume dressing, though our hearts may be pure in the participation, we are giving the world a different idea because the world sees halloween as what it is - a day of "celebrating" or enjoying all the occult-like things. Things such as glorifying skeletons, witches, monsters, ghosts, the devil himself, etc. So in a way, we are "participating" in the glorifying of the occult.
If you compare the 3 against-halloween arguments, you'll notice that they all have primary elements of argument 3 which would then cover the controversies for Christmas and Easter.
Proponents for halloween have these arguments:
Argument 1: some people will draw verses where it shows that as long as thier hearts are pure and not celebrating or worshipping the occult, then it's ok. It's just fun and games.
Argument 2: some people will draw verses to support their view that it's an opportunity to mingle into the culture so that we may be able to entice/bring more non-believers into the Shepherd's fold - that we should do everything we can to bring more lost sheep to Jesus.
Argument 3: some people will draw verses to support their view that the original traditions and pagan practices have been watered down so that halloween isn't even about the occult anymore and therefore it's ok to participate.
So who's right? Of course, none of us can really say for sure. But naturally, since we're all human, we want to convince the other party that they're wrong. The best thing to do if you're not sure is to pray about it. Even if you're sure, pray about it and see where the Holy Spirit moves you. None of us know God's plans so while it may not be ok for some people, it could be ok for others. Look at Hosea - God commanded him to marry a prostitute because He had a plan! Do you think Hosea would've married a prostitute if he had a say in the matter? In those days, I highly doubt it. But you see, though it was ok for Hosea to marry a prostitute, that doesn't mean it would've been ok for all the other people to do the same. So, whatever you decide, just keep an open mind to the Holy Spirit. It won't lead you wrong, that's for sure.