Proselytizing schools, though supported by public grants, entirely failed.
Russia, which had been their warmest patron, drove them from St Petersburg and Moscow in 1813, and from the whole empire in 1820, mainly on the plea of attempted proselytizing in the imperial army.
Rome took good care to educate the priesthood far above the status of the Orthodox priests.
The large English immigration is to be ascribed to the successful proselytizing efforts of the Mormons in England.
Defection from Zoroastrianism was punished with death, and therefore also the proselytizing of the Christians, though the Syrian martyrologies prove that the kings frequently ignored these proceedings so long as it was at all possible to do so.