Ezekiel 33:32 (KJV)

Say thou thus unto them, Thus saith the Lord GOD; As I live, surely they that are in the wastes shall fall by the sword, and him that is in the open field will I give to the beasts to be devoured, and they that be in the forts and in the caves shall die of the pestilence.

For I will lay the land most desolate, and the pomp of her strength shall cease; and the mountains of Israel shall be desolate, that none shall pass through.

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.

Also, thou son of man, the children of thy people still are talking against thee by the walls and in the doors of the houses, and speak one to another, every one to his brother, saying, Come, I pray you, and hear what is the word that cometh forth from the LORD.

And they come unto thee as the people cometh, and they sit before thee as my people, and they hear thy words, but they will not do them: for with their mouth they shew much love, but their heart goeth after their covetousness.

And when this cometh to pass, (lo, it will come,) then shall they know that a prophet hath been among them.