Ecclesiastes 3:11

3:11 God has made everything fit beautifully in its appropriate time,

but he has also placed ignorance in the human heart

so that people cannot discover what God has ordained,

from the beginning to the end of their lives.

Ecclesiastes 4:16

4:16 There is no end to all the people nor to the past generations,

yet future generations will not rejoice in him.

This also is profitless and like chasing the wind.