The notion of thought of watering down Christian belief as part of a dialogue with non-Christians is … well, fake news. Abandoning our convictions still happens, though independently of the conversations we might have with others.
282. It follows that “we believers need to find occasions to speak with one another and to act together for the common good and the promotion of the poor. This has nothing to do with watering down or concealing our deepest convictions when we encounter others who think differently than ourselves… For the deeper, stronger and richer our own identity is, the more we will be capable of enriching others with our own proper contribution”. [Querida Amazonia 106]
Pope Francis begins to discuss violence as a distortion of the foundations of Christianity:
We believers are challenged to return to our sources, in order to concentrate on what is essential: worship of God and love for our neighbor, lest some of our teachings, taken out of context, end up feeding forms of contempt, hatred, xenophobia or negation of others. The truth is that violence has no basis in our fundamental religious convictions, but only in their distortion.
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