Adam Clarke on 1 Kings 8:14

Blessed all the congregation - Though this blessing is not particularly stated, yet we may suppose that it was such as the high priest pronounced upon the people: "The Lord bless thee, and keep thee! The Lord make his face shine upon thee, and be gracious unto thee! The Lord lift up his countenance upon thee, and give thee peace!" (see Num 6:24-26), for Solomon seems now to be acting the part of the high priest. But he may have in view more particularly the conduct of Moses, who, when he had seen that the people had done all the work of the tabernacle, as the Lord had commanded them, he blessed them, Exo 39:43; and the conduct of his father David, who, when the ark had been brought into the city of David, and the burnt-offerings and peace-offerings completed, blessed the people in the name of the Lord, 2Sam 6:18.