Then they will know that I am the LORD, when I have made the land a desolate waste because of all the abominations they have committed.β
KJV
Then shall they know that I [am] the LORD, when I have laid the land most desolate because of all their abominations which they have committed.
ASV
Then shall they know that I am Jehovah, when I have made the land a desolation and an astonishment, because of all their abominations which they have committed.