Foolishness in Ecclesiastes
2 verses in Ecclesiastes.
Ecclesiastes 7:25I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishness and madness:
Ecclesiastes 10:13The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.