'Fools' in the Bible

They are but fools, the princes of Zoan, the wise counsellors of Pharaoh: their counsel is become senseless. How say ye unto Pharaoh, I am the son of the wise, the son of ancient kings?

And a highway shall be there and a way, and it shall be called, The way of holiness: the unclean shall not pass through it; but it shall be for these. Those that go this way even fools, shall not err therein.