Leviticus 23:29-33

²⁹For every man who will not humble himself on that same day, shall be cut off from his people.

³⁰And any man who doeth any work oil that same day, I will destroy that man from among his people.

³¹No work shall you do: an everlasting statute unto your generations, in all your dwellings.

³²A Sabbath of rest shall it be to you, and ye shall humble your souls, on the ninth of the month at evening: from evening to evening you shall rest your rest.

³³And the Lord spake with Mosheh, saying: