Leviticus 23:31-34 Amplified Bible (AMP)

31. You shall do no kind of work [on that day]. It is a statute forever throughout your generations in all your dwellings.

32. It shall be to you a sabbath of rest, and you shall afflict yourselves [by fasting in penitence and humility]. On the ninth day of the month from evening to evening you shall keep your sabbath.

33. And the Lord said to Moses,

34. Say to the Israelites, The fifteenth day of this seventh month, and for seven days, is the Feast of Tabernacles or Booths to the Lord.

Leviticus 23