Every week, before the beginning of the Jewish Sabbath, women light two candles to mark the beginning of the religious day of rest for observant Jews. As it was instructed by G-d to His servant Moses on Mt. Sinai, and written in the Ten Commandments: "Remember the Sabbath Day and keep it Holy". The tradition of lighting two candles or two small lamps of oil to usher in the Sabbath, or Shabbat in Hebrew, is said to originate in Jewish communities situated in and around the Mediterranean basin in the 8th Century C.E. The custom eventually spread to other Jewish communities until by the 14th Century it had spread over the entire Jewish world.