Leviticus 23:31

28 You shall do no manner of work in that same day; for it is a day of atonement, to make atonement for you before Yahweh your God.

29 For whatever soul it be who shall not be afflicted in that same day; he shall be cut off from his people.

30 Whatever soul it be who does any manner of work in that same day, that soul will I destroy from among his people.

31 You shall do no manner of work: it is a statute forever throughout your generations in all your dwellings.

32 It shall be to you a Sabbath of solemn rest, and you shall afflict your souls: in the ninth day of the month at even, from even to even, shall you keep your Sabbath.

33 Yahweh spoke to Moses, saying,

34 Speak to the children of Israel, saying, On the fifteenth day of this seventh month is the feast of tents for seven days to Yahweh.