39 "Remember that this seven-day festival to the Lord -the Festival of Shelters-begins on the fifteenth day of the appointed month, after you have harvested all the produce of the land. The first day and the eighth day of the festival will be days of complete rest. 40 On the first day gather branches from magnificent trees -palm fronds, boughs from leafy trees, and willows that grow by the streams. Then celebrate with joy before the Lord your God for seven days. 41 You must observe this festival to the Lord for seven days every year. This is a permanent law for you, and it must be observed in the appointed month from generation to generation. 42 For seven days you must live outside in little shelters. All native-born Israelites must live in shelters. 43 This will remind each new generation of Israelites that I made their ancestors live in shelters when I rescued them from the land of Egypt. I am the Lord your God."
Matthew Henry's Commentary on Leviticus 23:39-43
Commentary on Leviticus 23:33-44
(Read Leviticus 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.