Ecclesiastes 1:17
And I gave my heart to getting knowledge of wisdom, and of the ways of the foolish. And I saw that this again was desire for wind.
Ecclesiastes 2:3
I made a search with my heart to give pleasure to my flesh with wine, still guiding my heart with wisdom, and to go after foolish things, so that I might see what was good for the sons of men to do under the heavens all the days of their life.
Ecclesiastes 1:13-14
And I gave my heart to searching out in wisdom all things which are done under heaven: it is a hard thing which God has put on the sons of men to do.
Ecclesiastes 2:10-12
And nothing which was desired by my eyes did I keep from them; I did not keep any joy from my heart, because my heart took pleasure in all my work, and this was my reward.
Ecclesiastes 7:23-25
All this I have put to the test by wisdom; I said, I will be wise, but it was far from me.
1 Thessalonians 5:21
Let all things be tested; keep to what is good;