Judaism.

    Judaism is one of the oldest religions existing today.  It began as the religion of the small nation of the Hebrews.  Today, 14 million people follow this religion.  The Jewish people believe in one God, although monotheism was uncommon.  They studied the Torah which was "the Law", and they lived by it.  In Synagogues, which were places of worships, there would be a Rabbi teaching the Torah.  Although some believe in afterlife, other Jews only believe in the 13 Articles of Faith. 
     Major religious holidays for Jews include Passover, Rosh Hashanah,  and Yom Kippur. Also, Hanukkah is celebrated, in this religion. Hanukkah is a type of Christmas, somewhat.  Hanukkah is an eight day celebration, in which you receive gifts on each of the days.  It commemorates the re dedication of the Holy Temple in  Jerusalem. They have many other celebrations as well, such as Bar Mitzvahs, which is the ceremony in which a boy becomes a man.
     The Sabbath is their day of worship, and it is on every Saturday.  It is simply a day of rest and worship at the synagogue.  In Judaism, all days begin at sunset, so every holiday will be begin at sundown as well as end at sundown.