Leviticus 23:44

You shall keep it as a feast to the LORD seven days in the year. It is a statute forever throughout your generations. You shall keep it in the seventh month.

You shall dwell in temporary shelters for seven days. All who are native-born in Israel shall dwell in temporary shelters,

that your generations may know that I made the children of Israel to dwell in temporary shelters when I brought them out of the land of Egypt. I am the LORD your God.’”