How does The Lost Stradivarius develop the theme of Paganism vs Christianity?

The Lost Stradivarius by John Meade Falkner develops Paganism vs Christianity across the chapters the companion marks for this theme.

The narrative contrasts Christian piety with pagan sensuality, particularly in the descriptions of the Villa de Angelis, where sacred and profane objects are juxtaposed, and in Adrian Temple's revival of pagan mysteries, suggesting a moral battle between faith and hedonism.

Sophia is disturbed by the juxtaposition of pagan art and Christian symbols, feeling that Christianity still battles a living Paganism.