The kings of the earth, and all the inhabitants of the world, would not have believed that the adversary and the enemy should have entered into the gates of Jerusalem. 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.
Related Commentaries of Lamentations 4:12
Lamentations 4:12
12 The kings of the earth, and all the inhabitants of the world, would not have believed that the adversary and the enemy should have entered into the gates of Jerusalem.