Bulles of popes and of cardynales,
Of patriarkes and bishopes I shewe,
And in Latyn I speke a wordes fewe,
To saffron with my predicacioun,
And for to stire hem to devocioun.

– Geoffrey Chaucer

The Canterbury Tales, The Pardoner’s Prologue. When the Parsoner displays his indulgences to the people, he spices up his preaching up with a few words of Latin to impress his audience and stir them to devotion. It’s all showbiz to the consummate salesman of Church pardons and fake relics.