Church of God International (United States)
The CGI believes that some Christian beliefs have been wrongly changed long ago, only a couple hundred years after Christ. It believes they were changed by people who tried to mix their own ideas with Christian beliefs. It believes they did this because they hated Jews, or were pagan, or Gnostics, or Greek philosophers. These wrong ideas turned into traditions. CGI tries to worship the way they believe Christ wanted. CGI believes that the pagans worshipped demons without knowing it. So, they don't worship holidays that started out as pagan, like Halloween and Christmas. This also includes Valentine's Day and New Year's Day.