7 Bible Verses about Toiling In Vain

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

What profit hath a man of all his labor, which he taketh under the sun?

For what hath man of all his labor, and of the vexation of his heart, in which he hath labored under the sun?

Thus saith 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 people in the fire, and they shall be weary.

They have sown wheat, but shall reap thorns: they have put themselves to pain, but shall not profit; and they shall be ashamed of your revenues because of the fierce anger of the LORD.

There is one alone, and there is not a second; yes, he hath neither child nor brother: yet is there no end of all his labor; neither is his eye satisfied with riches; neither saith he, For whom do I labor, and bereave my soul of good? This is also vanity, yes, it is a grievous labor.

Behold, is it not from the LORD of hosts that the people shall labor in the very fire, and the people shall weary themselves for very vanity?