Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
In the sacerdotal system no comprehensive changes, so far as we know, took place. The more stringent enactments, that were made about 465 regarding the collection of the process-fines destined to defray the cost of public worship, point to an increase in the ritual budget of the state--a necessary result of the increase in the number of its gods and its temples.
It has already been mentioned as one of the evil effects of the dissensions between the orders that an illegitimate influence began to be conceded to the colleges of men of lore, and that they were employed for the annulling of political acts(19)--a course by which on the one hand the faith of the people was shaken, and on the other hand the priests were permitted to exercise a very injurious influence on public affairs.
19. Cf. II. III. Intrigues of the Nobility
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Reference address : https://www.ellopos.net/elpenor/rome/2-08-law-religion-army-economy-nationality.asp?pg=16