Matthew Poole and continuators on 1 Kings 8:14

14 And the king turned his face about , and blessed all the congregation of Israel ; (and all the congregation of Israel stood )

From the Temple, towards which he was looking to observe that thick and extraordinary darkness, to the Body of the Congregation.

Or, Blessed, (to wit, the Lord, which is easily understood from the following words; in which he onely blesseth or praiseth God, but doth not bless the People at all) with (so the Hebreweth is oft used, as hath been shewed before) all the congregation. Although he might do both, first bless the Congregation, which possibly he might do in that Solemn and Appointed Form, Numb. 6. which therefore it was needless to repeat here; and then blessed God. And indeed he doth both here below, where these same words are used, ver. 55, 56, &c.

Partly, in way of Devotion to God, whom they adored: and partly, out of respect to the King.