Ecclesiastes 1:17
So I decided to discern the benefit of wisdom and knowledge over foolish behavior and ideas; however, I concluded that even this endeavor is like trying to chase the wind!
Ecclesiastes 2:3
I thought deeply about the effects of indulging myself with wine (all the while my mind was guiding me with wisdom) and the effects of behaving foolishly, so that I might discover what is profitable for people to do on earth during the few days of their lives.
Ecclesiastes 1:13-14
I decided to carefully and thoroughly examine all that has been accomplished on earth. I concluded: God has given people a burdensome task that keeps them occupied.
Ecclesiastes 2:10-12
I did not restrain myself from getting whatever I wanted; I did not deny myself anything that would bring me pleasure. So all my accomplishments gave me joy; this was my reward for all my effort.
Ecclesiastes 7:23-25
I have examined all this by wisdom; I said, "I am determined to comprehend this" -- but it was beyond my grasp.
1 Thessalonians 5:21
But examine all things; hold fast to what is good.