New answers tagged kohen-priest
The Vilna Gaon taught that Yom Kippur is called Yom Kippurim - a day "like Purim" (See http://www.aish.com/h/pur/t/dt/48949286.html). Clearly Purim is at least as Holy of a day as Yom Kippur if not Holier because Yom Kippur is a day which is only "like Purim". Perhaps this person in shul misunderstood the Vilna Gaon to mean that one should dress up on Yom ...
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