The 10 Commandments are listed twice in the Torah, first in Exodus and again in Deuteronomy. In the Exodus version, we are told to keep Shabbat “for [in] six days the L‑rd made the heaven and the earth, the sea and all that is in them, and He rested on the seventh day.” In Deuteronomy, we are told to commemorate that “you were a slave in the land of Egypt, and that the L‑rd your G‑d took you out from there with a strong hand and with an outstretched arm.” “And you shall declare the Shabbat a delight,” says the prophet Isaiah.