'Toiled' in the Bible

Yet when I considered all the effort which I expended and the toil with which I toiled to do, then behold, "Everything [is] vanity and chasing wind! There is nothing profitable under the sun!"

So I hated all the fruit (gain) of my labor for which I had labored under the sun, because I must leave it to the man who will succeed me.

And who knows whether he will be a wise man or a fool? Yet he will have control over all the fruit of my labor for which I have labored by acting wisely under the sun. This too is vanity (futility, self-conceit).

So {I began to despair} of all the toil with which I toiled under the sun.

For there is a man who has labored with wisdom and knowledge and skill, yet gives his legacy to one who has not labored for it. This too is vanity and a great evil.

For what does a man get from all his labor and from the striving and sorrow of his heart with which he labors under the sun?

“Yet you have not called on Me [in prayer and worship], O Jacob;But you have grown weary of Me, O Israel.

So will they be to you those with whom you toiled and did business since your childhood they wander about, each in his own direction; there is not one who can save you.

But I said, “I have toiled in vain,I have spent My strength for nothing and vanity;Yet surely the justice due to Me is with the Lord,And My reward with My God.”

"The LORD has sworn by his right hand and by his mighty arm: "I will never again give your grain as food for your enemies; never again will foreigners drink your new wine for which you have toiled;

“But the shameful act [of idolatry] has consumed the labor of our fathers since our youth—their flocks and their herds, their sons and their daughters.