Ecclesiastes 3:10
“I have seen the travail, which God hath given to the sons of men to be exercised in it.”
A time to love, and a time to hate; a time of war, and a time of peace.
What profit hath he that worketh in that wherein he laboureth?
I have seen the travail, which God hath given to the sons of men to be exercised in it.
He hath made every thing beautiful in his time: also he hath set the world in their heart, so that no man can find out the work that God maketh from the beginning to the end.
I know that there is no good in them, but for a man to rejoice, and to do good in his life.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.”
“And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.”
“In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.”
“Neither did we eat any man’s bread for nought; but wrought with labour and travail night and day, that we might not be chargeable to any of you:”
“For ye remember, brethren, our labour and travail: for labouring night and day, because we would not be chargeable unto any of you, we preached unto you the gospel of God.”