When I applied my mind to know wisdom and to observe the task that one performs on the earth—though his eyes do not see sleep in the day or even in the night—
KJV
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:)
ASV
When I applied my 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),
I saw every work of God, and that a man is unable to comprehend the work that is done under the sun. Despite his efforts to search it out, he cannot find its meaning; even if the wise man claims to know, he is unable to comprehend.
KJV
Then I beheld all the work of God, that a man cannot find out the work that is done under the sun: because though a man labour to seek [it] out, yet he shall not find [it]; yea further; though a wise [man] think to know [it], yet shall he not be able to find [it].
ASV
then I beheld all the work of God, that man cannot find out the work that is done under the sun: because however much a man labor to seek it out, yet he shall not find it; yea moreover, though a wise man think to know it, yet shall he not be able to find it.