Ecclesiastes 1:7; Ecclesiastes 9:3; Ecclesiastes 11:5

Ecclesiastes 1:7

7 All the rivers flow into the sea, Yet the sea is not full. To the place where the rivers flow, There they flow again.

Ecclesiastes 9:3

3 This is an evil in all that is done under the sun, that there is one fate for all men. Furthermore, the hearts of the sons of men are full of evil and insanity is in their hearts throughout their lives. Afterwards they go to the dead.

Ecclesiastes 11:5

5 Just as you do not know the path of the wind and how bones are formed in the womb of the pregnant woman, so you do not know the activity of God who makes all things.