Leviticus 23:41-44 New American Standard Bible (NASB)

41. You shall thus celebrate it as a feast to the Lord for seven days in the year. It shall be a perpetual statute throughout your generations; you shall celebrate it in the seventh month.

42. You shall live in booths for seven days; all the native-born in Israel shall live in booths,

43. so that your generations may know that I had the sons of Israel live in booths when I brought them out from the land of Egypt. I am the Lord your God.'"

44. So Moses declared to the sons of Israel the appointed times of the Lord.

Leviticus 23