If both the Orthodox and Catholic Church affirm salvation by grace through faith, why did the Protestant Reformation happen?
What objective, foolproof method do Eastern Orthodox have for working out which side is correct in the case of a Schism?
From the perspective of Roman Catholicism, what do Orthodox churches have to do to become "Eastern Catholic Churches"?
Is it appropriate (as a Catholic) to make the sign of the cross when passing an Eastern Orthodox, Oriental Orthodox or Church of the East church?
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