2 Chronicles 7:7-9

7And Solomon consecrated the middle of the court that was before the house of the Lord, for there he offered the burnt offering and the fat of the peace offerings, because the bronze altar Solomon had made could not hold the burnt offering and the grain offering and the fat.

8At that time Solomon held the feast for seven days, and all Israel with him, a very great assembly, from Lebo-hamath to the Brook of Egypt.

9And on the eighth day they held a solemn assembly, for they had kept the dedication of the altar seven days and the feast seven days.