the nations … will go up … to worship the King: Another reversal will happen on the day of the Lord (compare Philippians 2:8–11).
The annual Feast of Tabernacles marked the start of the fall harvest season. It commemorated Israel’s time in the wilderness after leaving Egypt (see Exodus 23:14–19; Leviticus 23:33–43; Numbers 29:12–40; Deuteronomy 16:13–17). The festival gave the worshiping community a chance to thank God for his provision. It encouraged social concern for the disadvantaged and reliance on God as pilgrims in this world. Thanksgiving will define worship in the messianic era (see Isaiah 51:3; Jeremiah 33:11).