Leviticus 23:39
"'Moreover in the fifteenth day of the seventh month after that ye have gathered in the fruits of the land, ye shall keep holy day unto the LORD seven days long. The first day shall be a day of rest, and the eighth day shall be a day of rest.
Exodus 23:16
And the feast of Harvest, when thou reapest the first fruits of thy labors which thou hast sown in the field. And the feast of ingathering, in the end of the year: when thou hast gathered in thy labors out of the field.
Deuteronomy 16:13
Thou shalt observe the feast of tabernacles seven days long, after that thou hast gathered in thy corn and thy wine.
Leviticus 23:24
"Speak unto the children of Israel, and say, 'The first day of the seventh month shall be a rest of remembrance unto you, to blow horns in a holy feast it shall be,
Leviticus 23:34
"Speak unto the children of Israel, and say, 'The fifteenth day of the same seventh month shall be the feast of tabernacles, seven days unto the LORD.
Leviticus 23:36
Seven days ye shall offer sacrifice unto the LORD, and the eighth day shall be a holy feast unto you, and ye shall offer sacrifice unto the LORD. It is the end of the feast, and ye shall do no laborious work therein.