The day of rest is mentioned at the very beginning of the first book of the Bible, where God creates the world and then rests on the seventh day and blesses it. Sabbath is thus celebrated by Jews in memory of how God created the world and means that one refrains from all creative work, devotes himself to the family, studies the Torah, and rests. The Sabbath was also included in the covenant that God made with the Israelites after the exodus from Egypt.

Sabbath is celebrated weekly, from sunset on Friday evening until “three stars are visible” on Saturday evening.
The Sabbath celebration begins with lighting candles and eating a feast. On Saturday morning, a service is celebrated in the synagogues, when a section from the Torah is read and explained.