2 Chronicles 7:7-9

7Moreover, Solomon consecrated the middle of the courtyard that was in front of the house of the Lord, for it was there that he offered burnt offerings and the fat of the peace offerings because the bronze altar which he had made was not sufficient to hold the burnt offerings, the grain offerings, and the fat [all together].

8At that time Solomon observed the feast for seven days, and all Israel with him, a very large assembly, from the entrance of Hamath to the Brook of Egypt.

9On the eighth day they held a celebration, for they had observed the dedication of the altar for seven days, and the feast for seven days.