Since the Rabbinic period, Shavuot has been tied to the story of receiving the Torah. Connected to this, Shavuot has come to be dedicated to the idea of Torah study and Jewish education.
Confirmation is a Reform-originated ceremony for teens that is tied to the Jewish holiday of Shavuot. It constitutes an individual and group affirmation of commitment to the Jewish people. Confirmation, one of the “youngest” Jewish lifecycle ceremonies, began less than 200 years ago.
The origin of this custom is unknown.