Gates — In the great assemblies. These gates he elegantly opposes to the former. Of — Of the people who live or meet together in Zion. For cities are as it were mothers to their people, and the people are commonly called their daughters. So the names of the daughters of Egypt, Jeremiah 46:11, and of Edom, Lamentations 4:21-22, and of Tyre, Psalms 45:12, are put for the people of those places.
Related Commentaries of Psalms 9:14
Psalms 9:14
14 That I may shew forth all thy praise in the gates of the daughter of Zion: I will rejoice in thy salvation.