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
At the same time its ancient simplicity also departed. Theology, the
spurious offspring of reason and faith, was already occupied in
introducing its own tedious prolixity and solemn inanity into the old
homely national faith, and thereby expelling the true spirit of that
faith. The catalogue of the duties and privileges of the priest of
Jupiter, for instance, might well have a place in the Talmud.
They
pushed the natural rule--that no religious service can be acceptable
to the gods unless it is free from flaw--to such an extent in
practice, that a single sacrifice had to be repeated thirty times in
succession on account of mistakes again and again committed, and that
the games, which also formed a part of divine service, were regarded
as undone if the presiding magistrate had committed any slip in word
or deed or if the music even had paused at a wrong time, and so had to
be begun afresh, frequently for several, even as many as seven, times
in succession.