Albert Barnes Commentary 1 Kings 8:65

"So Solomon held the feast at that time, and all Israel with him, a great assembly, from the entrance of Hamath unto the brook of Egypt, before Jehovah our God, seven days and seven days, even fourteen days." — 1 Kings 8:65 (ASV)

A feast necessarily accompanied a sacrifice like the one Solomon was offering . On this occasion, there was a double festival: first, the Feast of the Dedication, from the 8th to the 15th of the month Ethanim (or Tisri), and then the Feast of Tabernacles, from the 15th to the 22nd (1 Kings 8:2). On the day after this—the “eighth day,” counting from the start of the second week, and the twenty-third day of the month—Solomon dismissed the people to their homes.

The entering in of Hamath—This phrase marks the extreme northern boundary of the Holy Land .

The river of Egypt—This refers to the Wadi el-Arish, the only large watercourse on this coast.