'Feeds' in the Bible

The teaching of the righteous feeds many, but fools die for lack of wisdom.

The discerning heart seeks knowledge, but the mouth of fools feeds on folly.

He feeds on ashes; his deceived mind misleads him. He cannot rescue himself, nor does he say, 'Is this not a false god I hold in my right hand?'

Ephraim continually feeds on the wind; he chases the east wind all day; he multiplies lies and violence. They make treaties with Assyria, and send olive oil as tribute to Egypt.