Solomon kept the feast seven days - The time chosen for the dedication of the temple was immediately previous to the feast of tabernacles (see on 1Ki 8:1-12). That season, which came after the harvest, corresponding to our September and October, lasted seven days, and during so prolonged a festival there was time afforded for the offering of the immense sacrifices enumerated. A large proportion of these were peace offerings, which afforded to the people the means of festive enjoyment.
all Israel ... from the entering in of Hamath - that is, the defile at Lebanon.
unto the river of Egypt - that is, Rhinocorura, now El-Arish, the south boundary of Palestine.