And the prophets shall become wind - What are the prophets?
Empty persons. Their words are wind; we hear the sound of their threatening but of the matter of the threatenings we shall hear no more.
And the word is not in them - There is no inspirer, but may their own predictions fall on their own heads! This seems the natural sense of this passage.
Word - Rather, speaker. Literally, And he who speaketh is not in them, i. e., there is no one who speaketh in them; what the prophets say has no higher authority than themselves.
Thus - i. e., May the evil which the prophets threaten fall upon their head.