RELIGIOUS PRACTICE AND POPULAR CUSTOMS The Bible provides no guidelines that explain how Christmas should be observed, nor does it even suggest that it should be considered a religious holiday. Because of the lack of biblical instructions, Christmas rituals have been shaped by the religious and popular traditions of each culture that celebrates the holiday. On Christmas Eve, churches around the world hold evening services. At midnight, most Catholic and many Protestant churches hold special candlelight services. The Catholic midnight Mass w ....