Leviticus 23:22-30

²²And when ye reap the harvest of your land, thou shalt not cut away altogether the corners of thy field when thou reapest, and the gleaning of thy harvest shalt thou not gather up; unto the poor, and to the stranger shalt thou leave them: I am the Lord your God.

²³And the Lord spoke unto Moses, saying,

²⁴Speak unto the children of Israel, saying, In the seventh month, on the first day of the month, shall ye have a rest, a day of memorial of sounding the cornet, a holy convocation.

²⁵No servile work shall ye do: and ye shall offer an offering made by fire unto the Lord.

²⁶And the Lord spoke unto Moses, saying,

²⁷But on the tenth day of this seventh month is the day of atonement, a holy convocation shall it be unto you, and ye shall fast; and ye shall offer an offering made by fire unto the Lord.

²⁸And no manner of work shall ye do on this same day; for it is a day of atonement, to make an atonement for you before the Lord your God.

²⁹For whatsoever person it be that fasteth not on this same day, shall be cut off from among his people.

³⁰And if there be any person that doth any work on this same day, then will I destroy the same person from among his people.