Ecclesiastes 2:20

Therefore I went about to cause my heart to despair of all the labour which I took under the sun.

Therefore I began to cause my heart to despair concerning all the labor in which I had labored under the sun.

Therefore I turned about to cause my heart to despair concerning all the labor wherein I had labored under the sun.

And I turned round to cause my heart to despair concerning all the labour that I laboured at under the sun.

So my heart began to despair over all the labor that I had done under the sun.