Ecclesiastes 2:23

2:23 For all day long his work produces pain and frustration,

and even at night his mind cannot relax!

This also is futile!

Ecclesiastes 4:14

4:14 For he came out of prison to become king,

even though he had been born poor in what would become his kingdom.

Ecclesiastes 8:16

Limitations of Human Wisdom

8:16 When I tried to gain wisdom

and to observe the activity on earth –

even though it prevents anyone from sleeping day or night –

Ecclesiastes 9:5

9:5 For the living know that they will die, but the dead do not know anything;

they have no further reward – and even the memory of them disappears.