Heres some stuff for ya, dont know if I am done looking yet. Just trying to find something of the topic at hand. Keep in mind, I did not write this, I went in search of answers.
Many Halloween (All Hallows Eve) traditions date back to Druid customs 700 years before Christ when a festival to appease Samhain, the "lord of the dead" was celebrated in the fall. Sacrificial burnings of animals and people called bone-fires were held. "Trick or treating" was a celtic custom that began as farmers traveling to the Samhein festival would stop at houses
along the way to obtain food. If they were unhappy with the food or were refused, the house was cursed with trouble sickness and death.
On this night it was believed that spirits of the dead were allowed to roam the earth so people carried lit Jack-o'-lanterns carved with hideous faces and wore masks to scare away the evil spirits as they traveled.
The early church changed the festival into a day of praying for the dead saints called All Saints Day. Protestant churches, however do not recognize this as a holy day. The biggest problem with halloween for many Christians is the fact that it is considered a high holy day for Wicca, witchcraft and other satanic cults who are still very active.
Many people cite that Christmas and Easter also began as pagan
celebrations. The difference is actually obvious. December 25th is not Jesus' actual birth but the symbols connected to the Holiday have true Christian meanings. Easter time is the celebration of our Risen Savior and coincides with Passover. Halloween, however, shares no relationship to our beliefs and the symbols connected to it are still considered unholy. Even
after eliminating the safety concerns, there are many reasons not to celebrate.
The final determination ultimately comes from scripture, which is God's instructions concerning how we should behave. Here are two of many:
Deuteromony 18: 10-12 "Let no one be found among you who sacrifices his son or daughter in the fire, who practices devination or sorcery, interprets omens, engages in witchcraft, or casts spells, or who is a medium or spiritist or who consults the dead. Anyone who does these things is detestable to the Lord, ".
Ephesians 5: 8-11 "For you were once in darkness, but now you are light in the Lord. Live as children of light (for the fruit of the light consists in all goodness, righteousness and truth) and find out what pleases the Lord. Have nothing to do with the fruitless deeds of darkness, but rather expose them.