When I: Solomon here records the result of his perplexing inquiries into the affairs of men, and the purposes, providence, and works of God. And when he examined with great attention and diligence into the works of God, he found he could neither comprehend nor explain them; and was persuaded, that no application or capacity would enable a man to fathom the depth of the Divine dispensations in this lower world. How vain, then, are all cavils against Divine providence; when we can neither understand, nor comprehend it! Ecclesiastes 8:9, Ecclesiastes 8:7 Ecclesiastes 7:25
there is that: Ecclesiastes 2:23, Ecclesiastes 4:8, Ecclesiastes 5:12; Genesis 31:40; Psalms 127:2