Psalms 127:1, 2

Unless the Lord builds a house, the work of the builders is wasted. Unless the Lord protects a city, guarding it with sentries will do no good. It is useless for you to work so hard from early morning until late at night, anxiously working for food to eat; for God gives rest to his loved ones.

 (Psalms 127:1, 2 NLT)