John Gill

For, lo, I will call all the families of the kingdoms of the north, saith the Lord,.... Which belonged unto and were under the jurisdiction of Nebuchadnezzar king of Babylon; and the "call" of them, as Kimchi well observes, is no other than putting it into their hearts to come: and they shall come; being influenced and directed by the providence of God, who had a principal concern in this matter: and they shall set everyone his throne at the entering of the gates of Jerusalem; meaning, not only that they should pitch their military tents, and encamp about Jerusalem, and place themselves at the entering of the gates, in order to get in; but that they should sit down there in great safety and security, and be very successful, victorious, and triumphant: and against all the walls thereof round about, and against all the cities of Judah; not only besiege Jerusalem, and take that, but also all the rest of the cities of the land.