Leviticus 23:31-33

Amplified Bible

³¹ You shall do no work at all [on that day]. It is a permanent statute throughout your generations wherever you may be. ³² It is to be to you a Sabbath of complete rest, and you shall humble yourselves. On the ninth day of the month at evening, from evening to evening you shall keep your Sabbath.”

The Feast of Booths

³³ Again the Lord spoke to Moses, saying,