Ecclesiastes 3:10
For as touching the travail and carefulness which God hath given unto men, I see that he hath given it them, to be exercised in it.
Genesis 3:19
In the sweat of thy face shalt thou eat bread, until thou return unto the earth whence thou wast taken: for earth thou art, and unto earth shalt thou return."
Ecclesiastes 2:26
He giveth unto man, what it pleaseth him; whether it be wisdom, understanding, or gladness. But unto the sinner he giveth weariness and sorrow, that he may gather and heap together the thing, that afterward shall be given unto him whom it pleaseth God. This is now a vain thing, yea a very disquietness and vexation of mind.
Ecclesiastes 1:13-14
applied my mind to seek out and search for the knowledge of all things that are done under heaven. Such travail and labor hath God given to the children of men, to exercise themselves therein.
1 Thessalonians 2:9
Ye remember, brethren, our labour and travail. For we laboured day and night, because we would not be grievous unto any of you, and preached unto you the gospel of God.
2 Thessalonians 3:8
Neither took we bread of any man for nought: but wrought with labour and travail night and day, because we would not be grievous to any of you: