'Foolishness' in the Bible

Therefore the Lord does not take pleasure in their young men,Nor does He have pity on their orphans or their widows;For every one of them is godless and an evildoer,And every mouth is speaking foolishness.In spite of all this, His anger does not turn awayAnd His hand is still stretched out.

Causing the omens of boasters to fail,Making fools out of diviners,Causing wise men to draw backAnd turning their knowledge into foolishness,