Halloween is an annual celebration with supernatural themes. It is often an occasion for costume parties, pumpkin carving and trick-or-treating. Because of its pagan origins, it is often criticised by religions, such as the Jehovah's Witnesses  and Christian evangelicals. Other religions and Christian denominations tolerate the festival or celebrate it with a religious emphasis.
Celebrations like Halloween are in conflict with Bible teachings. The Bible warns: “There must never be anyone among you who . . . practices divination, who is soothsayer, augur or sorcerer, who uses charms, consults ghosts or spirits, or calls up the dead.” - Deuteronomy 18:10-11 
Fundamentalist Christian alternatives
In some areas of the United States, fundamentalist churches arrange an alternative to the Halloween "haunted house": a Christian "hell house" in which scenes of a person dying, being judged by God and going to either Heaven or Hell are re-enacted.  These productions are intended to strengthen faith and convince undecided people to commit more fully. The argument is simply avoidance of hell.
- Christians React… To Halloween!, TYT video
- Sarah Galo, Halloween was banned in my childhood, but that caused ignorance, not salvation
- Christian "Haunted House" Was The Wrong Kind Of Creepy, TYT, 31 Oct 2016