Ecclesiastes 8:16

When I gave my heart to know wisdom and to see the task which has been done on the earth (even though one should never sleep day or night),

Psalm 127:2

It is vain for you to rise up early,
To retire late,
To eat the bread of painful labors;
For He gives to His beloved even in his sleep.

Ecclesiastes 1:13

And I set my mind to seek and explore by wisdom concerning all that has been done under heaven. It is a grievous task which God has given to the sons of men to be afflicted with.

Ecclesiastes 2:23

Because all his days his task is painful and grievous; even at night his mind does not rest. This too is vanity.

Genesis 31:40

Thus I was: by day the heat consumed me and the frost by night, and my sleep fled from my eyes.

There was a certain man without a dependent, having neither a son nor a brother, yet there was no end to all his labor. Indeed, his eyes were not satisfied with riches and he never asked, “And for whom am I laboring and depriving myself of pleasure?” This too is vanity and it is a grievous task.

Ecclesiastes 5:12

The sleep of the working man is pleasant, whether he eats little or much; but the full stomach of the rich man does not allow him to sleep.

Ecclesiastes 7:25

I directed my mind to know, to investigate and to seek wisdom and an explanation, and to know the evil of folly and the foolishness of madness.

Ecclesiastes 8:7

If no one knows what will happen, who can tell him when it will happen?

Ecclesiastes 8:9

All this I have seen and applied my mind to every deed that has been done under the sun wherein a man has exercised authority over another man to his hurt.

Treasury of Scripture Knowledge

Summary

Ecclesiastes 8:16

When I applied mine heart to know wisdom, and to see the business that is done upon the earth: (for also there is that neither day nor night seeth sleep with his eyes:)

There is that

Psalm 127:2

General references

Ecclesiastes 9:13

Bible References