The use of the Christmas tree is relatively modern. Its origins are found in the medieval mystery plays that depicted the tree of paradise and the Christmas light or candle that symbolized Christ, the Light of the world. According to custom, the Christmas tree is set up just before Christmas and may remain in place until the Solemnity of Epiphany. The lights of the tree are illuminated after the prayer of blessing. In the home the Christmas tree may be blessed by a parent or another family member, in connection with the evening meal on the Vigil of Christmas or at another suitable time on Christmas Day. Click here for the Blessing Ritual.