The Bible does not directly mention Christmas trees. However, the tradition of decorating a tree for the winter season is believed to have originated in Germany during the 16th century. The practice became popular in the United States in the 19th century and has since become a symbol of the holiday season. Some Christians believe that Christmas trees are a pagan tradition and therefore inappropriate for celebrating the birth of Christ. However, the vast majority of Christians see no conflict between decorating a tree and celebrating the birth of Jesus.