Ecclesiastes 1:17
And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.
Ecclesiastes 2:3
I sought in mine heart to give myself unto wine, yet acquainting mine heart with wisdom; and to lay hold on folly, till I might see what was that good for the sons of men, which they should do under the heaven all the days of their life.
Ecclesiastes 1:13-14
And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.
Ecclesiastes 2:10-12
And whatsoever mine eyes desired I kept not from them, I withheld not my heart from any joy; for my heart rejoiced in all my labour: and this was my portion of all my labour.
Ecclesiastes 7:23-25
All this have I proved by wisdom: I said, I will be wise; but it was far from me.
1 Thessalonians 5:21
Prove all things; hold fast that which is good.