[Note: Whenever I refer to the Church, I mean the regenerated followers of Jesus Christ, not some brick-and-mortar structure.]
The Church has allowed Satan, the ancient enemy of Creator God, to steal, or at least taint, many of our celebrations. The man Saint Nicholas, Bishop of Myra, who gave his all to follow the Saviour, has morphed into a jolly, rotund, caricature we call Santa Claus, and the Easter Bunny continues to try to usurp the position of the resurrected Saviour. Children are taught erroneously that Thanksgiving was a time when the Pilgrims thanked the Indians for helping them to survive in the wilderness.
All Hallows' Eve also has suffered at the hands of the enemy, though not as much as the afore-mentioned, since it was never purely Christian and has clearly pagan origins. Most agrarian cultures celebrate significant events in the seasonal growing cycle: harvest time, solstices and equinoxes, and planting time, for example.
The origins of All Hallows' Eve--Hallowe'en (don't forget the apostrophe)--go back 2,000 years to the Celtic festival of Samhain (pronounced sow-in). The word means "end of summer." Pumpkins, apples, and various gourds were a significant part of that event. The Celtic new year began on November 1.
By 43 A.D., the Romans had conquered the Celts, and within the following 400 years, had integrated their own pagan festivals into Samhain, including Feralia, occurring in late October. Feralia was a day to commemorate the dead.
"Christianity" spread through the Celtic lands by the 800s. In the eighth century, Pope Gregory III established that November 1 would be All Hallows' Day. According to Roman Catholic belief, All Hallows' Day was when souls were released from Purgatory and allowed to wander the Earth for 48 hours. Apparently, Pope Gregory was attempting to supplant Samhain with a Christianized version. That was Pope Gregory's M.O. He often claimed pagan celebrations and buildings and imposed a "Christian" significance on them. For example, he claimed the Pantheon (which was dedicated by the Romans to "all gods") for a Christian purpose. His All Saints' Eve was celebrated much as Samhain had been, with bonfires, parades, and people wearing costumes of saints, angels, and devils.
Today, many people claim that Hallowe'en is an innocent harvest festival, but a quick trot through the costume section of the local Wal-Mart tells a different story. With a glance backward to Samhain, Feralia, and, yes, All Hallows' Eve, one can see that the culture of death lives and thrives in today's celebration. It amazes me that many Christian parents continue to celebrate this time of ghosts, ghouls, goblins, and witches, labeling it "innocent fun." What is innocent about rubber masks that portray people who have been maimed, disfigured, frightened out of their minds, or murdered? Parents who encourage such "innocent fun" are opening the creaking door on the occult and nudging their wee ones over the threshold. Hallowe'en always has flirted with the macabre. May our All-wise God grant to those children the wisdom that their parents and grandparents lack.
Jesus says that He Is the Light of the World (John 8:12). As His followers, we are commissioned to reflect that light in today's dark world (Matthew 5:14).
As for Hallowe'en, we need not reclaim it; we never owned it.