42 The chains, the agonies, the tortures, the groans, the blood of the innumerable multitude of persons, known and unknown, who recently and even today, have suffered and still suffer on account of their courage and constancy in the profession of their faith, cry out to all with louder and louder voice as the days go by, to embrace the unity of the Church.
Source: Sempiternus Rex Christus (Vatican.va)