Ecclesiastes 3:10

I looked at the employment which God hath given to the sons of men, to work therein:

Genesis 3:19

In the sweat of thy face, shalt thou eat bread, until thou return to the ground, because therefrom, wast thou taken, - For, dust, thou art, And, unto dust, shalt thou return.

Ecclesiastes 2:26

For, to a man who is good before him, hath he given wisdom and knowledge and gladness, - whereas, to the sinner, he hath given employment, to gather and heap up, to give to one who is good before God, even this, was vanity, and a feeding on wind.

Ecclesiastes 1:13-14

And I gave my heart to seek and to search out, wisely, concerning all things which are done under the heavens, - the same, is the vexatious employment God hath given to the sons of men, to work toilsomely therein,

1 Thessalonians 2:9

For ye remember, brethren, our toil and hardship: night and day, working, so as not to be a burden unto any of you, we proclaimed unto you the glad-message of God,

2 Thessalonians 3:8

Nor, as a free-gift, did eat, bread, from anyone, but, with toil and hardship, night and day, working, - that we might not burden any of you; -

Treasury of Scripture Knowledge

Summary

I have seen the travail, which God hath given to the sons of men to be exercised in it.

Bible References

General references

Ecclesiastes 1:13
And I gave my heart to seek and to search out, wisely, concerning all things which are done under the heavens, - the same, is the vexatious employment God hath given to the sons of men, to work toilsomely therein,
Ecclesiastes 2:26
For, to a man who is good before him, hath he given wisdom and knowledge and gladness, - whereas, to the sinner, he hath given employment, to gather and heap up, to give to one who is good before God, even this, was vanity, and a feeding on wind.
Genesis 3:19
In the sweat of thy face, shalt thou eat bread, until thou return to the ground, because therefrom, wast thou taken, - For, dust, thou art, And, unto dust, shalt thou return.
1 Thessalonians 2:9
For ye remember, brethren, our toil and hardship: night and day, working, so as not to be a burden unto any of you, we proclaimed unto you the glad-message of God,
2 Thessalonians 3:8
Nor, as a free-gift, did eat, bread, from anyone, but, with toil and hardship, night and day, working, - that we might not burden any of you; -