Shabbat is the most important ritual observance in Judaism. It is the only ritual observance instituted in the Ten Commandments. Shabbat is primarily a day of rest and spiritual enrichment. The word "Shabbat" comes from the root Shin-Beit-Tav, meaning to end or to rest. Most Jewish families undertake this day of rest quite literally. An example of this would be that the act of a switching a light on or off because it is deemed as an act of labour by producing electricity. During Shabbat Jews are expected to remember the importance of Shabbat and observe it with great care.