This Shabbat, we read Parshat Shekalim, the first of the Arba Parshiyot—a reminder of the mitzvah of the half-shekel, which Bnei Yisrael gave to sustain the Communal Korbanot. But this mitzvah is far more than just a historical tax. The Gemara Yerushalmi reveals something incredible:Haman paid a sum of silver to buy the right to…