or Shabbat (Hebrew שבת) A deep mystery in the Judeo-Christian tradition related to the most holy science of creation, unknown to the uninitiated but celebrated in the weekly holy day (holi-day). In Kabbalah, the mystery of the sephirah Binah. Sabbath is also related to the ancient Saturnalia, a ritual feast. The essence of the Sabbath is sexual purity.
"Remember the sabbath day, to keep it holy. Six days shalt thou labour, and do all thy work: But the seventh day [is] the sabbath of the LORD thy God: [in it] thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that [is] within thy gates: For [in] six days the LORD made heaven and earth, the sea, and all that in them [is], and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it." - Exodus 20
"Remember the Shabbat day, to keep it holy" (Shemot 20:8). This is the secret of the Holy Covenant, which is Yesod, for in this Covenant lie all the sources of the limbs of the body, and it comprises everything. In the same manner, the Shabbat day includes all the Torah, all of its secrets originate in it. And he who keeps the Shabbat is considered as one who keeps the whole Torah." - Zohar