Commentaries:
Barnes' Notes
These verses supplement Ecclesiastes 8:15 with the reflection that the man who goes beyond that limited sphere within which he can labor and be contented, and investigates the whole work of God, will find that his finite intelligence cannot grasp it.
Ecclesiastes 8:16
Business - Or, "travail" Ecclesiastes 1:13; Ecclesiastes 3:10. The sleeplessness noted probably refers to the writer himself.
Other Barnes' Notes entries containing Ecclesiastes 8:17:
Ecclesiastes 3:11
Ecclesiastes 7:23
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