The holy day of rest and reflection observed each Saturday among the Jews. This custom fulfills the third of the Ten Commandments (“Remember the Sabbath day, to keep it holy”). The Sabbath commemorates the last of the seven days of Creation as described in the Book of Genesis, the day God rested from his labors of creating the heavens and the Earth.
Note: Christians have traditionally kept Sunday as a weekly day of rest in adaptation of the Jewish observance, and in commemoration of the Resurrection of Jesus. Some denominations, such as the Seventh-Day Adventists, observe Saturday as the Sabbath.