Ecclesiastes 2:12

Then turned I me to consider wisdom, error and foolishness: for what is he among men, that might be compared to me the king in such work?

Ecclesiastes 1:17

for thereunto I applied my mind: that I might know what were wisdom and understanding, what were error and foolishness. And I perceived that this also was but a vexation of mind:

Ecclesiastes 7:25

I applied my mind also to knowledge, and to seek out science, wisdom and understanding: to know the foolishness of the ungodly, and the error of doting fools.

Ecclesiastes 1:9-10

The thing that hath been, cometh to pass again; and the thing that hath been done, again is done - there is nothing new under the Sun.

Treasury of Scripture Knowledge

Summary

Ecclesiastes 2:12

And I turned myself to behold wisdom, and madness, and folly: for what can the man do that cometh after the king? even that which hath been already done.

I turned

Ecclesiastes 1:17

Ecclesiastes 7:25

Even that which hath been already done

Ecclesiastes 2:25

Bible References

I turned

for thereunto I applied my mind: that I might know what were wisdom and understanding, what were error and foolishness. And I perceived that this also was but a vexation of mind:

I applied my mind also to knowledge, and to seek out science, wisdom and understanding: to know the foolishness of the ungodly, and the error of doting fools.

Even that which hath been already done

For who will eat or go more lustily to his work than I?