Ecclesiastes 2:18-20

King James Version

¹⁸ Yea, I hated all my labour which I had taken under the sun: because I should leave it unto the man that shall be after me.

¹⁹ And who knoweth whether he shall be a wise man or a fool? yet shall he have rule over all my labour wherein I have laboured, and wherein I have shewed myself wise under the sun. This is also vanity.

²⁰ Therefore I went about to cause my heart to despair of all the labour which I took under the sun.