Ecclesiastes 2:10-11; Ecclesiastes 2:17; Ecclesiastes 2:24-26
And whatever my eyes desired I did not keep from them; I kept my heart from no pleasure, for my heart found pleasure in all my toil, and this was my reward for all my toil.
Then I considered all that my hands had done and the toil I had spent in doing it, and behold, all was vanity and a striving after wind, and there was nothing to be gained under the sun.
So I hated life, because what is done under the sun was grievous to me; for all is vanity and a striving after wind.
There is nothing better for a man than that he should eat and drink, and find enjoyment in his toil. This also, I saw, is from the hand of God;
for apart from him who can eat or who can have enjoyment?
For to the man who pleases him God gives wisdom and knowledge and joy; but to the sinner he gives the work of gathering and heaping, only to give to one who pleases God. This also is vanity and a striving after wind.