Leviticus 23:31

23:31 You must not do any work. This is a perpetual statute throughout your generations in all the places where you live.

Leviticus 23:39

23:39 “‘On the fifteenth day of the seventh month, when you gather in the produce of the land, you must celebrate a pilgrim festival of the Lord for seven days. On the first day is a complete rest and on the eighth day is complete rest.