55 But now, with the greatest fatherly anguish of heart, we see a new and terrible storm threatening this Church. The information which reaches us is scanty, but is sufficient to cause solicitude and fill us with anxiety. It is the anniversary of the day three hundred and fifty years ago, when this ancient community of Christians was happily united to the supreme pastor, the successor of St. Peter; but this same day has become for us "a day of tribulation and distress, a day of calamity and misery, a day of darkness and obscurity, a day of clouds and whirlwinds."
Source: Orientales Omnes Ecclesias (Vatican.va)