As an atheist I have an obligation to finish reading it all (still going through, and taking notes, probably having to revisit), but I am not sure how many (christian) believers will feel the same.
As an atheist and even anti-theist I see no such obligation. What a strange thing to say
Priests will read it and then talk to their congregations about it on Sundays throughout the year, if not explicitly, then in how it shapes their homilies.
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