Leviticus 23:2-4

2“Speak to the sons of Israel and say to them, ‘1The Lord’s appointed times which you shall 2proclaim as holy convocations--My appointed times are these:

3‘3For six days work may be done, but on the seventh day there is a sabbath of complete rest, a holy convocation. You shall not do any work; it is a sabbath to the Lord in all your dwellings.

4‘These are the 4appointed times of the Lord, holy convocations which you shall proclaim at the times appointed for them.