Today, there are Christians who have preferred to celebrate Halloween every October 31st. But is the believer really called to participate in this celebration? Can one, as an Adventist, adapt this festival for Christian purposes? What does the Bible say about this? In order to answer these questions, this study presents the historical development of Halloween and its relationship to Christianity. It then looks at what the Bible says about the immortality of the soul and, finally, points out why Christians should not celebrate this festival.