Job 15:2

Should a wise man utter vain knowledge - Or rather, Should a wise man utter the science of wind? A science without solidity or certainty.

And fill his belly with the east wind? - בטן beten , which we translate belly, is used to signify any part of the cavity of the body, whether the region of the thorax or abdomen; here it evidently refers to the lungs, and may include the cheeks and fauces. The east wind, קדים kadim , is a very stormy wind in the Levant, or the eastern part of the Mediterranean Sea, supposed to be the same with that called by the Greeks ευροκλυδων , euroclydon , the east storm, mentioned Acts 27:14 . Eliphaz, by these words, seems to intimate that Job's speech was a perfect storm or tempest of words.