Ecclesiastes 1:17

I applied my mind to know wisdom and knowledge, madness and folly; I learned that this too is a pursuit of the wind.

Ecclesiastes 2:3

I explored with my mind how to let my body enjoy life with wine and how to grasp folly—my mind still guiding me with wisdom—until I could see what is good for people to do under heaven during the few days of their lives.

Ecclesiastes 1:13-14

I applied my mind to seek and explore through wisdom all that is done under heaven. God has given people this miserable task to keep them occupied.

Ecclesiastes 2:10-12

All that my eyes desired, I did not deny them. I did not refuse myself any pleasure, for I took pleasure in all my struggles. This was my reward for all my struggles.

Ecclesiastes 7:23-25

I have tested all this by wisdom. I resolved, “I will be wise,” but it was beyond me.

1 Thessalonians 5:21

but test all things.
Hold on to what is good.

Treasury of Scripture Knowledge

Summary

And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.

I perceived

Bible References

I gave

Ecclesiastes 1:13
I applied my mind to seek and explore through wisdom all that is done under heaven. God has given people this miserable task to keep them occupied.
Ecclesiastes 2:3
I explored with my mind how to let my body enjoy life with wine and how to grasp folly—my mind still guiding me with wisdom—until I could see what is good for people to do under heaven during the few days of their lives.
Ecclesiastes 7:23
I have tested all this by wisdom. I resolved, “I will be wise,” but it was beyond me.
1 Thessalonians 5:21
but test all things.
Hold on to what is good.

I perceived

Ecclesiastes 2:10
All that my eyes desired, I did not deny them. I did not refuse myself any pleasure, for I took pleasure in all my struggles. This was my reward for all my struggles.

General references

Ecclesiastes 1:14
I have seen all the things that are done under the sun and have found everything to be futile, a pursuit of the wind.
Ecclesiastes 6:11
For when there are many words, they increase futility. What is the advantage for man?

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.