Some such of these is the observance of religious feast days and regulations such as the Lenten Season, an important aspect of Catholicism; regular attendance at Church especially at Easter and Christmas and the celebration of Sacraments. (ambergrisCaye.com)
The traditional versions of both kinds of holidays have usually been associated with religious feasts. (firstthings.com)
The Passover was one of those occasions, for this the supreme religious feast of the Jews was also the most dangerous time of the year. (religion-online.org)