'Reason' 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].

“Behold, I have discovered this,” says the Preacher, “while adding one thing to another to find an explanation,

Behold, I have found only this [as a reason]: God made man upright and uncorrupted, but they [both men and women] have sought out many devices [for evil].”