Ecclesiastes 2:11, 15, 17, 19, 21, 23, 26
Ecclesiastes 2:11 ESV
Then I considered all that my hands had done and the toil I had expended in doing it, and behold, all was vanity and a striving after wind, and there was nothing to be gained under the sun.
Ecclesiastes 2:15 ESV
Then I said in my heart, “What happens to the fool will happen to me also. Why then have I been so very wise?” And I said in my heart that this also is vanity.
Ecclesiastes 2:17 ESV
So I hated life, because what is done under the sun was grievous to me, for all is vanity and a striving after wind.
Ecclesiastes 2:19 ESV
and who knows whether he will be wise or a fool? Yet he will be master of all for which I toiled and used my wisdom under the sun. This also is vanity.
Ecclesiastes 2:21 ESV
because sometimes a person who has toiled with wisdom and knowledge and skill must leave everything to be enjoyed by someone who did not toil for it. This also is vanity and a great evil.
Ecclesiastes 2:23 ESV
For all his days are full of sorrow, and his work is a vexation. Even in the night his heart does not rest. This also is vanity.