The kings of the earth - Jerusalem was so well fortified, both by nature and art, that it appeared as a miracle that it should be taken at all.
Though Jerusalem had been several times captured 1 Kings 14:26; 2 Kings 14:13; 2 Kings 23:33-35, yet it had been so strongly fortified by Uzziah and his successors as to have been made virtually impregnable. Its present capture by Nebuchadnezzar had cost him a year and a half‘s siege.