Evangelii Nuntiandi §50

50. In the course of twenty centuries of history, the generations of Christians have periodically faced various obstacles to this universal mission. On the one hand, on the part of the evangelizers themselves, there has been the temptation for various reasons to narrow down the field of their missionary activity. On the other hand, there has been the often humanly insurmountable resistance of the people being addressed by the evangelizer. Furthermore, we must note with sadness that the evangelizing work of the Church is strongly opposed, if not prevented, by certain public powers Even in our own day it happens that preachers of God's Word are deprived of their rights, persecuted, threatened or eliminated solely for preaching Jesus Christ and His Gospel. But we are confident that despite these painful trials the activity of these apostles will never meet final failure in any part of the world.

Despite such adversities, the Church constantly renews her deepest inspiration, that which comes to her directly from the Lord: To the whole world! To all creation! Right to the ends of the earth! She did this once more at the last Synod, as an appeal not to imprison the proclamation of the Gospel by limiting it to one sector of mankind or to one class of people or to a single type of civilization. Some examples are revealing.