All that pass by. — The triumphant exultation of the enemies of Zion came to add bitterness to her sorrows. They reminded her of what she had been in the past, and contrasted it with her present desolation.
The perfection of beauty... — Like phrases are used of Zion in Psalms 48:2; Psalms 50:2; of Tyre in Ezekiel 27:3. Now that beauty was turned into squalor and desolation.