Ecclesiastes 3:10

3:10 I have observed the burden

that God has given to people to keep them occupied.

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 12:12

Concluding Exhortation: Fear God and Obey His Commands!

12:12 Be warned, my son, of anything in addition to them.

There is no end to the making of many books,

and much study is exhausting to the body.

Genesis 3:19

3:19 By the sweat of your brow you will eat food

until you return to the ground,

for out of it you were taken;

for you are dust, and to dust you will return.”