Ecclesiastes 3:9

Man is Ignorant of God’s Timing

3:9 What benefit can a worker gain from his toil?

Ecclesiastes 3:22

3:22 So I perceived there is nothing better than for people to enjoy their work,

because that is their reward;

for who can show them what the future holds?

Ecclesiastes 4:4

Labor Motivated by Envy

4:4 Then I considered all the skillful work that is done:

Surely it is nothing more than competition between one person and another.

This also is profitless – like chasing the wind.

Ecclesiastes 11:5

11:5 Just as you do not know the path of the wind,

or how the bones form in the womb of a pregnant woman,

so you do not know the work of God who makes everything.