Leviticus 23:26-44  And the LORD spake unto Moses, saying,  (27)Also on the tenth [day] of this seventh month [there shall be] a day of atonement: it shall be an holy convocation unto you; and ye shall afflict your souls, and offer an offering made by fire unto the LORD.

(28) And ye shall do no work in that same day: for it [is] a day of atonement, to make an atonement for you before the LORD your God. (29) For whatsoever soul [it be] that shall not be afflicted in that same day, he shall be cut off from among his people. (30) And whatsoever soul [it be] that doeth any work in that same day, the same soul will I destroy from among his people.

(31) Ye shall do no manner of work: [it shall be] a statute for ever throughout your generations in all your dwellings. (32) It [shall be] unto you a sabbath of rest, and ye shall afflict your souls: in the ninth [day] of the month at even, from even unto even, shall ye celebrate your sabbath.