Ecclesiastes 9:1

It has been observed concerning those who have pretended to search for the philosophers' stone that, though they could never find what they sought for, yet in the search they have hit upon many other useful discoveries and experiments. Thus Solomon, when, in the close of the foregoing chapter, he applied his heart to know the work of God, and took a great deal of pains to search into it, though he despaired of finding it out, yet he found out that which abundantly recompensed him for the search, and gave him some satisfaction, which he here gives us; for therefore he considered all this in his heart, and weighed it deliberately, that he might declare it for the good of others. Note, What we are to declare we should first consider; think twice before we speak once; and what we have considered we should then declare. I believed, therefore have I spoken. The great difficulty which Solomon met with in studying the book of providence was the little difference that is made between good men and bad in the distribution of comforts and crosses, and the disposal of events. This has perplexed the minds of many wise and contemplative men. Solomon discourses of it in these verses, and, though he does not undertake to find out this work of God, yet he says that which may prevent its being a stumbling-block to us. I.

— Matthew Henry's Concise Commentary (public domain)