'Madness' in the Bible

And I set my mind to know wisdom and to know madness and folly; I realized that this also is striving after wind.

I said of laughter, “It is madness,” and of pleasure, “What does it accomplish?”

So I turned to consider wisdom, madness and folly; for what will the man do who will come after the king except what has already been done?

I directed my mind to know, to investigate and to seek wisdom and an explanation, and to know the evil of folly and the foolishness of madness.

the beginning of his talking is folly and the end of it is wicked madness.