Psalm 127:1 in the King James Version
Except the LORD build the house, they labour in vain that build it: except the LORD keep the city, the watchman waketh but in vain.
Context
1 Unless the LORD builds the house, they who build it labor in vain. Unless the LORD watches over the city, the watchman guards it in vain.
2 It is vain for you to rise up early, to stay up late, eating the bread of toil, for he gives sleep to his loved ones.