Ecclesiastes 5:17

5:17 Surely, he ate in darkness every day of his life,

and he suffered greatly with sickness and anger.

Ecclesiastes 5:20

5:20 For he does not think much about the fleeting days of his life

because God keeps him preoccupied with the joy he derives from his activity.

Ecclesiastes 11:1

Ignorance of the Future Demands Diligence in the Present

11:1 Send your grain overseas,

for after many days you will get a return.