Ecclesiastes 2:11

Then I looked on all the works that my hands had done, and on the labor that I had labored to do; and, behold, all is vanity and vexation of spirit; and there is no profit under the sun.

Ecclesiastes 1:14

I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.

Ecclesiastes 1:3

What is the profit to a man in all his labor which he labors under the sun?

Genesis 1:31

And God saw everything that He had made, and behold, it was very good. And the evening and the morning were the sixth day.

Exodus 39:43

And Moses looked upon all the work, and, behold, they had done it. As Jehovah commanded, even so they had done it. And Moses blessed them.

Ecclesiastes 2:17-23

Therefore I hated life; because the work that is done under the sun is sad to me; for all is vanity and vexation of spirit.

Habakkuk 2:13

Behold, is it not for Jehovah of Hosts that the people labor only for fire; yea, the nations weary themselves only for vanity?

1 Timothy 6:6

But godliness with contentment is great gain.

1 John 2:16-17

because all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.

Treasury of Scripture Knowledge

Summary

Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was vanity and vexation of spirit, and there was no profit under the sun.

Bible References

I looked

Ecclesiastes 1:14
I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.
Genesis 1:31
And God saw everything that He had made, and behold, it was very good. And the evening and the morning were the sixth day.
Exodus 39:43
And Moses looked upon all the work, and, behold, they had done it. As Jehovah commanded, even so they had done it. And Moses blessed them.
1 John 2:16
because all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.

Behold

Ecclesiastes 2:17
Therefore I hated life; because the work that is done under the sun is sad to me; for all is vanity and vexation of spirit.
Ecclesiastes 1:3
What is the profit to a man in all his labor which he labors under the sun?
Habakkuk 2:13
Behold, is it not for Jehovah of Hosts that the people labor only for fire; yea, the nations weary themselves only for vanity?
1 Timothy 6:6
But godliness with contentment is great gain.

General references

Proverbs 14:13
Even in laughter the heart is sorrowful, and the end of that joy is heaviness.
Ecclesiastes 1:2
Vanity of vanities, says the preacher, vanity of vanities! All is vanity.
Ecclesiastes 3:9
What profit does he have who works in that in which he labors?