Ecclesiastes 3:20-22

²⁰Everything is going to the same place. Everything comes from the dust, and everything returns to the dust.

²¹Who knows whether the spirit of mankind goes upward and the spirit of animals goes downward into the earth?

²²So again I realized that there is nothing better for anyone than to take pleasure in his work, for that is his assignment. Who can bring him back to see what happens after him?