Ecclesiastes 2:11

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!"

Ecclesiastes 1:14

I saw all the works that are done under the sun. Look! Everything [is] vanity and chasing wind.

Ecclesiastes 1:3

What does a person gain in all his toil with which he toils under the sun?

Genesis 1:31

And God saw everything that he had made and, behold, [it was] very good. And there was evening, and there was morning, a sixth day.

Exodus 39:43

And Moses saw all the work, and, indeed, they had done it as Yahweh had commanded; so they did, and Moses blessed them.

Ecclesiastes 2:17-23

So I hated life because the work done under the sun [is] grievous to me. For everything [is] vanity and chasing wind!

Habakkuk 2:13

Look! [Is it] not from Yahweh of hosts that people labor for mere fire, and nations exhaust themselves for mere vanity?

1 Timothy 6:6

But godliness with contentment is a great means of gain.

1 John 2:16-17

because everything [that is] in the world--the desire of the flesh and the desire of the eyes and the arrogance of material possessions--is not from the Father, but is from 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 saw all the works that are done under the sun. Look! Everything [is] vanity and chasing wind.
Genesis 1:31
And God saw everything that he had made and, behold, [it was] very good. And there was evening, and there was morning, a sixth day.
Exodus 39:43
And Moses saw all the work, and, indeed, they had done it as Yahweh had commanded; so they did, and Moses blessed them.
1 John 2:16
because everything [that is] in the world--the desire of the flesh and the desire of the eyes and the arrogance of material possessions--is not from the Father, but is from the world.

Behold

Ecclesiastes 2:17
So I hated life because the work done under the sun [is] grievous to me. For everything [is] vanity and chasing wind!
Ecclesiastes 1:3
What does a person gain in all his toil with which he toils under the sun?
Habakkuk 2:13
Look! [Is it] not from Yahweh of hosts that people labor for mere fire, and nations exhaust themselves for mere vanity?
1 Timothy 6:6
But godliness with contentment is a great means of gain.

General references

Proverbs 14:13
Even in laughter, a heart may be sad, and the end of joy [may be] grief.
Ecclesiastes 1:2
"Vanity of vanities!" says the Teacher, "Vanity of vanities! All [is] vanity!"
Ecclesiastes 3:9
What does the worker gain in his toil?