Leviticus 23:22-32

22And when ye reap the harvest of your land, thou shalt not make clean riddance of the corners of thy field when thou reapest, neither shalt thou gather any gleaning of thy harvest: thou shalt leave them unto the poor, and to the stranger: I am Yhwh your God.

23And Yhwh spake unto Moses, saying, 24Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation. 25Ye shall do no servile work therein: but ye shall offer an offering made by fire unto Yhwh.

26And Yhwh spake unto Moses, saying, 27Also 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 Yhwh. 28And ye shall do no work in that same day: for it is a day of atonement, to make an atonement for you before Yhwh your God. 29For whatsoever soul it be that shall not be afflicted in that same day, he shall be cut off from among his people. 30And whatsoever soul it be that doeth any work in that same day, the same soul will I destroy from among his people. 31Ye shall do no manner of work: it shall be a statute for ever throughout your generations in all your dwellings. 32It 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.1