That your generations may know. — When their posterity are securely occupying the land of Canaan, the temporary dwelling in booths once a year may remind them of the goodness of God vouchsafed to their fathers in delivering them from the land of bondage, and sheltering them in booths in the wilderness.
Related Commentaries of Leviticus 23:43
Leviticus 23:43
43 That your generations may know that I made the children of Israel to dwell in booths, when I brought them out of the land of Egypt: I am the LORD your God.