“From the fruit of his mouth a man’s stomach is filled” is how one version expresses the first part of verse 20.

What a fascinating and counter-intuitive thought! We might normally expect that our bellies are filled by what goes into them, not by what comes out – that what we say is the product, or fruit, of ideas and influences we have ingested. And, of course, that is true enough, but these two sayings playfully flip the obvious idea on its head.