Words to admonish a deleterious age

“The holy, evangelical and divine Gospel of Salvation should be set forth by all in its original simplicity, and should evermore be believed in its unadulterated purity, even the same as it was revealed to His holy Apostles by our Savior, who for this very cause, descending from the bosom of God the Father, made Himself of no reputation and took upon Him the form of a servant (Phil. ii. 7)…”

“But the Prince of Evil, that spiritual enemy of man's salvation, as formerly in Eden, craftily assuming the pretext of profitable counsel, he made man to become a transgressor of the divinely-spoken command. So in the spiritual Eden, the Church of God, he has from time to time beguiled many; and, mixing the deleterious drugs of heresy with the clear streams of orthodox doctrine, gives of the potion to drink to many of the innocent who live unguardedly, not giving earnest heed to the things they have heard (Heb. ii. 10), and to what they have been told by their fathers (Deut. xxxii. 7), in accordance with the Gospel and in agreement with the ancient Doctors; and who, imagining that the preached and written Word of the LORD and the perpetual witness of His Church are not sufficient for their souls' salvation, impiously seek out novelties, as we change the fashion of our garments, embracing a counterfeit of the evangelical doctrine.”

—Encyclical of the Eastern Patriarchs, 1848 — A Reply to the Epistle of Pope Pius IX, "to the Easterns".