'Labor In Vain' in the Bible

[A song of ascents. Of Solomon.] Unless the LORD builds the house, they labor in vain that build it: unless the LORD keeps the city, the watchman wakes, but in vain.

They shall not labor in vain, nor bring forth for trouble; for they are the descendants of the blessed of the LORD, and their offspring with them.

Thus says the LORD of hosts; The broad walls of Babylon shall be utterly broken, and her high gates shall be burned with fire; and the people shall labor in vain, and the nations, because of the fire, and they shall be weary.

I am afraid for you, lest I have bestowed upon you labor in vain.