Job 15:2
"Should a wise man utter vain knowledge, and fill his belly with the east wind?"
Cross References (ranked by relevance)
Do ye imagine to reprove words, and the speeches of one that is desperate, which are as wind?
How long wilt thou speak these things? and how long shall the words of thy mouth be like a strong wind?
Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom.
What ye know, the same do I know also: I am not inferior unto you.
Ephraim feedeth on wind, and followeth after the east wind: he daily increaseth lies and desolation; and they do make a covenant with the Assyrians, and oil is carried into Egypt.