Eccl 8:16

“"When I applied my heart to see wisdom and work which takes place on earth- for even day or night its eyes see no sleep. And I perceived all the work of God. Indeed man cannot fathom the events that occur under the sun, inasmuch as man tries strenuously to search, but cannot fathom it. And even though a wise man should presume to know, he cannot know it. "He searches for the causes and understanding of the world, why this or that is done, and for what reason the world is steered by good or bad turns of events; why one is born blind and frail, another born healthy and with sight; why one is poor, another rich; why one is of high birth, another inglorious. Nothing else is of use, unless he is tortured in his search, and has an argument instead of anguish, but he does not find what he is looking for. And when he says that he knows, then he has the beginning of ignorance in him, and starts to sink into deeper madness. But he shows later that justice is the cause of all things, why things happen the way they do, but that those causes hide in secret and are not able to be understood by men.”

“It has been shown how the vanity of security arises from the exaltation of the wicked and also from the oppression of the good. Here it is shown thirdly how it arises from the indistinction of the one group and the other. For because the wicked cannot be distinguished from the good, therefore they are secure; and since this security has its origin from this kind of indistinction, and it itself is also the principle of pleasure, therefore this part has two parts. First it is shown how from indistinction arises security; second, how from security arises pleasure, at the passage: There is no one who lives forever, etc. First it is shown how security is born from this. The first point, therefore, is described in this order: first, therefore, is noted the vain solicitude of discerning; second, the uncertainty of discernment; third, the reason for the uncertainty; fourth, is noted from this the origin of vain security. Therefore first is intimated the vain solicitude of discerning, which solicitude was diligent; whence he says: And I applied my heart, that is, I applied my intellect; that I might know wisdom, with respect to invisible things, and understand the distinction of those things which are occupied on earth, with respect to visible things, because Romans 1: "The invisible things of God are clearly seen from the creation of the world, being understood through those things which have been made." And this solicitude is vain, because however much a man may labor, he cannot find out; therefore he adds: There is a man who day and night takes no sleep with his eyes, but rather labors continually to inquire, above in chapter three: "I saw the affliction which God has given to the sons of men, that they might be occupied in it"; and he adds: "He made all things good and delivered the world to their disputation"; and although he labors so much, he profits nothing.”