21 There is another special reason why Mary will be favorably disposed to grant our united prayers in behalf of the nations cut off from communion with the Church: namely, the prodigious things they have done for her honor in the past, especially in the East. To them is due much of the credit for propagating and increasing devotion to her. From them have come some of the best-remembered heralds and champions of her dignity, who have wielded a mighty influence by their authority or by their writings-eulogists famed for the ardor and the charm of their eloquence; "empresses well beloved of God,"(16) who imitated the Virgin most pure in the example of their lives, and paid honor to her with lavish generosity; temples and basilicas built to her glory with regal splendor.
Source: Adiutricem (Vatican.va)