"Rather, that the things which the Gentiles sacrifice they sacrifice to demons and not to God, and I do not want you to have fellowship with demons" (1 Corinthians 10:20)
The short answer is NO! A better question might be, “why would believers even want to celebrate or participate in an event that glorifies death and demons???
The only thing that is somewhat decent about Halloween is its name. “All Hallows” means all holy. It came to refer to all the holy ones, that is, saints. Hence, it was called All Saints Day. But not any more!
We’ve traced the roots of Halloween to the Pagan celebration of Samhain. This was "a day to commune with and remember the dead, and it is a celebration of the eternal cycle of reincarnation." Halloween retains much of the original form and meaning it had long ago. The Catholic Church began calling Halloween by a new name, Michaelmas, which was the feast day of St. Michael, but the old Samhain holiday proved to be too potent a drawing card for the Catholics to combat. So it was renamed the Eve of All Saints, or All Hallows Eve, which precedes All Saints Day, and is still one of the holiest days in Catholicism.
“You can't have it both ways, banqueting with the Master one day and slumming with demons the next. Besides, the Master won't put up with it. He wants us -- all or nothing. Do you think you can get off with anything less?" (2 Corinthians 10:21-22, The Message).
The facts of history clearly reveal the truth about Halloween’s sinister nature. There is no other holiday that is so clearly evil from beginning to end. To participate in something so obviously evil is to join the demons in celebration. To fellowship with demons means to share with them. To celebrate Halloween is to share in the celebration of demons. This means that you and the demons celebrate together, you fellowship with them. The Bible clearly forbids it!
The lame excuse some parents give for letting their children participate in this devil's day, is that they don't want to deny their kids the fun. One wonders what happened to denying yourself? Surely to deny yourself means to say no to fun that is contrary to God's will. And it is surely not God's will for you to join demons in celebrating evil. Don’t our children need to learn self-denial? Don’t they need to learn not to be "conformed to this world" (Romans 12:2)? If we don't teach them to stand for God now, do you think they will later? I think not!
The Bible commands us to "Come out from among them and be separate, says the Lord. Do not touch what is unclean, and I will receive you" (2 Cor.6:17). Are we separate when we join with the world in celebrating evil? Halloween is a day dedicated to evil and deception, by celebrating it are we not touching that which is unclean? Compromising with the world will never win the world or your kids. Deny yourself, take up your cross, and do not take part in the devil's day.