Use By Non-Jews
The Kol Nidrei prayer has been used by non-Jews as a basis for asserting that an oath taken by a Jew may not be trusted. Historically, this accusation was leveled so often and so persistently that many non-Jewish legislators considered it necessary to have a special form of oath administered to Jews ("Oath More Judaico"), and many judges refused to allow them to take a supplementary oath, basing their objections chiefly on this prayer. As early as 1240 in the Disputation of Paris, Yechiel of Paris was obliged to defend Kol Nidrei against these charges. The Russian government, in 1857, decreed that the prayerbooks must include, as an introduction to Kol Nidrei, a Hebrew explanation to the readers of the limited nature of the vows that could be released by this ceremony.
Read more about this topic: Kol Nidre