Ecclesiastes 8:16
Therefore I applied mine heart to know wisdom and to see the business that is done upon the earth (for also there is he that neither day nor night sees sleep with his eyes).
Psalm 127:2
It is vain for you to rise up early, to come home late, to eat the bread of sorrows, because he shall give his beloved sleep.
Ecclesiastes 1:13
And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven (this sore travail God has given to the sons of man that they be occupied in it).
Ecclesiastes 2:23
For all his days are only sorrows, and his travail grief; yea, his heart does not take rest in the night. This is also vanity.
Genesis 31:40
By day the drought consumed me, and by night, the frost; and my sleep departed from mine eyes.
Ecclesiastes 4:8
It is the man who is alone, without a successor, who has neither son nor brother; yet is there no end of all his labour; neither is his eye satisfied with riches; neither saith he, For whom do I labour and bereave my soul of good? This is also vanity and sore travail.
Ecclesiastes 5:12
The sleep of the servant is sweet whether he eats little or much, but the abundance of the rich will not suffer him to sleep.
Ecclesiastes 7:25
I applied my heart to know and to search and to seek out wisdom and the reason of things, and to know the wickedness of folly and the madness of error;
Ecclesiastes 8:7
for he does not know that which shall be; nor when it shall be. Who will teach it to him?
Ecclesiastes 8:9
All this I have seen and applied my heart unto every work that is done under the sun: the time in which one man rules over another to his own hurt.