Shabbat commemorates God’s rest after creation and is observed with rest from work, prayer, festive meals and study. The kabbalists of Safed welcomed it as a bride, the Shekhinah, and described it as a taste of the world to come. Abraham Joshua Heschel called it a palace in time.
Shabbat
The Sabbath: the seventh day of rest and holiness, from Friday evening to Saturday night.
Also: Sabbath