Exodus 20:9

20:9 For six days you may labor and do all your work,

Exodus 23:12

23:12 For six days you are to do your work, but on the seventh day you must cease, in order that your ox and your donkey may rest and that your female servant’s son and any hired help may refresh themselves.

Leviticus 23:3

The Weekly Sabbath

23:3 “‘Six days work may be done, but on the seventh day there must be a Sabbath of complete rest, a holy assembly. You must not do any work; it is a Sabbath to the Lord in all the places where you live.

Ezekiel 20:12

20:12 I also gave them my Sabbaths as a reminder of our relationship, so that they would know that I, the Lord, sanctify them.