Seventh-day Adventists are a Christian denomination that originated in the 1800s. They believe in the Bible as the inspired word of God and the teachings of Jesus Christ. While they do not celebrate Christmas as a religious holiday, they do believe that it is important to honor and celebrate the birth of Jesus Christ. Seventh-day Adventists typically participate in non-traditional Christmas activities, such as reading the Christmas story from the Bible, singing carols, and attending church services. They may also choose to give gifts or engage in charitable activities during this time.