In ch.17, Anne reflects on Mr. Elliot:

The names which occasionally dropt of former associates, the allusions to former practices and pursuits, suggested suspicions not favourable of what he had been. She saw that there had been bad habits: that Sunday travelling had been a common thing; that there had been a period of his life (and probably not a short one) when he had been, at least, careless on all serious matters.

I was struck by this because although JA's novels are deeply *moral* works, I find she rarely alluded to specifically *religious* reasons for doing or not doing something. JA's characters don't object to alcohol, card-playing or gambling for their own sake, so it's interesting to see that travelling on Sunday was considered a sign (or at least a possible indication) of immorality.