'Sometimes' in the Bible

During the days of my fleeting life I have seen both of these things: Sometimes a righteous person dies prematurely in spite of his righteousness, and sometimes a wicked person lives long in spite of his evil deeds.

While applying my mind to everything that happens in this world, I have seen all this: Sometimes one person dominates other people to their harm.

Here is another enigma that occurs on earth: Sometimes there are righteous people who get what the wicked deserve, and sometimes there are wicked people who get what the righteous deserve. I said, "This also is an enigma."