(43) 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.

23:33-44 In the feast of Tabernacles there was a remembrance of their dwelling in tents, or booths, in the wilderness, as well as their fathers dwelling in tents in Canaan; to remind them of their origin and their deliverance. Christ's tabernacling on earth in human nature, might also be prefigured. And it represents the believer's life on earth: a stranger and pilgrim here below, his home and heart are above with his Saviour. They would the more value the comforts and conveniences of their own houses, when they had been seven days dwelling in the booths. It is good for those who have ease and plenty, sometimes to learn what it is to endure hardness. The joy of harvest ought to be improved for the furtherance of our joy in God. The earth is the Lord's, and the fullness thereof; therefore whatever we have the comfort of, he must have the glory of, especially when any mercy is perfected. God appointed these feasts, Beside the sabbaths and your free-will offerings. Calls to extraordinary services will not excuse from constant and stated ones.That your generations may know that I made the children of Israel to dwell in booths,.... Which by the providence of God the Israelites were obliged to make for themselves to dwell in:

when I brought them out of the land of Egypt; for the very first place they came to, when they departed from thence, was called Succoth, from the booths they there built:

I am the Lord your God; who brought them out of Egypt, made them to dwell in booths in the wilderness, and enjoined them the observance of the feast of tabernacles in memory of it, in which he expected to be obeyed.