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All sayings, all comments, are open to interpretation, and I suppose it is no surprise that Christians will seek to see the good in the utterings of the Pontiff.
It seems pretty clear to me that his exhortation is pretty direct; If are not an active believer in god, then you are in thrall to Satan. And even if you dismiss this public quote of his from my OP, he has alluded to Satan on several occasions, memorably when attempting to halt the passing of new civil rights laws in Argentina for gay marriage.
It will be interesting to see the developments, but there seems no hint of progressive or liberal values in his stance; No hint of reaching out or inclusivity beyond pageantry and symbolism....
As Vulcan says ; Its all allegorical, or metaphorical, unless a faithhead says its literal.....