Ecclesiastes 7:15
“All things have I seen in the days of my vanity: there is a just man that perisheth in his righteousness, and there is a wicked man that prolongeth his life in his wickedness.”
Consider the work of God: for who can make that straight, which he hath made crooked?
In the day of prosperity be joyful, but in the day of adversity consider: God also hath set the one over against the other, to the end that man should find nothing after him.
All things have I seen in the days of my vanity: there is a just man that perisheth in his righteousness, and there is a wicked man that prolongeth his life in his wickedness.
Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?
Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time?
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“For who knoweth what is good for man in this life, all the days of his vain life which he spendeth as a shadow? for who can tell a man what shall be after him under the sun?”
“Though a sinner do evil an hundred times, and his days be prolonged, yet surely I know that it shall be well with them that fear God, which fear before him:”
“Though a sinner do evil an hundred times, and his days be prolonged, yet surely I know that it shall be well with them that fear God, which fear before him:”
“There is a vanity which is done upon the earth; that there be just men, unto whom it happeneth according to the work of the wicked; again, there be wicked men, to whom it happeneth according to the work of the righteous: I said that this also is vanity.”
“For there are no bands in their death: but their strength is firm.”