Charles Ellicott Commentary Ecclesiastes 8:14

"There is a vanity which is done upon the earth, that there are righteous men unto whom it happeneth according to the work of the wicked; again, there are wicked men to whom it happeneth according to the work of the righteous: I said that this also is vanity." — Ecclesiastes 8:14 (ASV)

Happens. —The word is used in this sense only in Esther 9:26.