'Set' in the Bible

I turned around and directed my heart to know, to investigate and to seek [skillful and godly] wisdom and the reason for things, and to know that wickedness is folly and that foolishness is madness [leading to stupidity and recklessness].

Because the sentence against an evil act is not executed quickly, the hearts of the sons of men are fully set to do evil.

folly is set in many exalted places and in great dignity while the rich sit in humble places.

Furthermore, because the Preacher was wise, he still taught the people knowledge; and he pondered and searched out and arranged many proverbs.