Ecclesiastes 1:3

Futility Illustrated from Nature

1:3 What benefit do people get from all the effort

which they expend on earth?

Ecclesiastes 4:9

Labor is Beneficial When Its Rewards Are Shared

4:9 Two people are better than one,

because they can reap more benefit from their labor.

Ecclesiastes 6:11

6:11 The more one argues with words, the less he accomplishes.

How does that benefit him?