21-23. In an ascending gradation, the land destroyed by the enemy, the beasts of the field, and the children of Zion, the land's inhabitants, are addressed, the former two by personification.
      Lord will do great things--In contrast to the "great things" done by the haughty foe (Joe 2:20) to the hurt of Judah stand the "great things" to be done by Jehovah for her benefit (compare Ps 126:2, 3).

JFB.