Solomon Celebrates the Feast of Tabernacles
Our first written example of the celebration of the Feast of Tabernacles is in the days of Solomon. When Solomon dedicated the temple, the glory of God filled it on the eighth day of the Feast of Tabernacles. 2 Chronicles 5:1-3 says,
1Thus all the work that Solomon performed for the house of the LORD was finished. And Solomon brought in the things that David his father had dedicated, even the silver and the gold and all the utensils, and put them in the treasuries of the house of God. 2 Then Solomon assembled to Jerusalem the elders of Israel and all the heads of the tribes, the leaders of the fathers' households of the sons of Israel, to bring up the ark of the covenant of the LORD out of the city of David, which is Zion. 3 And all the men of Israel assembled themselves to the king at the feast, that is in the seventh month.
When the 120 priests blew the trumpets in harmony (in one accord) with the singers, the glory filled that house (2 Chron. 5:12-14). 2 Chronicles 7:8-10 says they dedicated the altar for seven days, and then kept the Feast of Tabernacles for seven days:
8 So Solomon observed the feast at that time for seven days, and all Israel with him, a very great assembly, who came from the entrance of Hamath to the brook of Egypt. 9 And on the eighth day they held a solemn assembly, for the dedication of the altar they observed seven days, and the feast seven days. 10 Then on the twenty-third day of the seventh month [the day after the eighth of Tabernacles] he sent the people to their tents, rejoicing and happy of heart because of the goodness that the LORD had shown to David and to Solomon and to His people Israel.
http://www.godskingdomministries.org/Se ... /Chap7.htm