It should be remembered, too, that the Oriental custom of deifying emperors having been introduced into Rome, to burn incense before their statues had become a kind of test of loyalty. This adoration does not, it is true, appear to have implied any particular article of belief, and it was probably regarded by most men as we regard the application of the term “Sacred Majesty” to a sovereign, and the custom of kneeling in his presence; but it was esteemed inconsistent with Christianity, and the conscientious refusal of the Christians to comply with it aroused a feeling resembling that which was long produced in Christendom by the refusal of Quakers to comply with the usages of courts. The obligation to perform the sacred rites of an idolatrous worship, if rigidly enforced, would have amounted, in the case of the Jews and the Christians, to a complete proscription. It does not, however, appear that the Jews were ever persecuted on this ground. They formed a large and influential colony in Rome. They retained undiminished, in the midst of the Pagan population, their exclusive habits, refusing not merely all religious communion, but most social intercourse with the idolaters, occupying a separate quarter of the city, and sedulously practising their distinctive rites. Tiberius, as we have seen, appears to have involved them in his proscription of Egyptian superstitions; but they were usually perfectly unmolested, or were molested only when their riotous conduct had attracted the attention of the rulers. The Government was so far from compelling them to perform acts contrary to their religion, that Augustus expressly changed the day of the distribution of corn, in order that they might not be reduced to the alternative of forfeiting their share, or of breaking the Sabbath.(772) It appears, then, that the old Republican intolerance had in the Empire been so modified as almost to have disappeared. The liberty of speculation and discussion was entirely unchecked. The liberty of practising foreign religious rites, though ostensibly limited by the law against unauthorised religions, was after Tiberius equally secure. The liberty of abstaining from the official national rites, though more precarious, was fully conceded to the Jews, whose jealousy of idolatry was in no degree inferior to that of the Christians. It remains, then, to examine what were the causes of the very exceptional fanaticism and animosity that were directed against the latter.