39 Before the return to unity our dissident brethren themselves lamented that our holy religion was in a ruinous state in those regions, that the vice of simony everywhere prevailed in the choice of bishops and other sacred ministers, that Church goods were dissipated, the morals of monks corrupt, the discipline of monasteries in decay, and even the bond of obedience between the faithful and their pastors every day further weakened and imperiled. But, on the contrary, after the establishment of unity, by the inspiration and help of God, the state of affairs gradually improved. How great was the strength of mind and constancy needed by the bishops to restore Church discipline everywhere, especially in the early days; so troubled by every kind of disturbance and opposition! What persevering work and patient labor they had to devote to raising up a clergy of the highest moral standard; to consoling the flocks committed to them, harassed by such harsh circumstances; and finally to sustaining and strengthening in every way those whose faith was wavering and faltering! None the less, contrary to all human calculation, not only did this auspicious union triumphantly overcome all the contrary storms, but it emerged from its victorious battle with increased vitality and strength. Thus it came about that it was not by the sword or the scourge, not by promises or threats, but by an outstanding example of religious life and a kind of manifest display of divine grace, that the Catholic Ruthenians finally brought the dissident eparchies of Lvov and Przemysl to enter the one fold.
Source: Orientales Omnes Ecclesias (Vatican.va)