Redemptoris Missio §45

⁴⁵ Proclamation, because it is made in union with the entire ecclesial community, is never a merely personal act. The missionary is present and carries out his work by virtue of a mandate he has received; even if he finds himself alone, he remains joined by invisible but profound bonds to the evangelizing activity of the whole Church. Sooner or later, his hearers come to recognize in him the community which sent him and which supports him. Proclamation is inspired by faith, which gives rise to enthusiasm and fervor in the missionary. As already mentioned, the Acts of the Apostles uses the word parrhesia to describe this attitude, a word which means to speak frankly and with courage. This term is found also in St. Paul: "We had courage in our God to declare to you the Gospel of God in the face of great opposition" (1 Th 2:2); "Pray...also for me, that utterance may be given me in opening my mouth boldly to proclaim the mystery of the Gospel for which I am an ambassador in chains; that I may declare it boldly, as I ought to speak" (Eph 6:18-20). In proclaiming Christ to non-Christians, the missionary is convinced that, through the working of the Spirit, there already exists in individuals and peoples an expectation, even if an unconscious one, of knowing the truth about God, about man, and about how we are to be set free from sin and death. The missionary's enthusiasm in proclaiming Christ comes from the conviction that he is responding to that expectation, and so he does not become discouraged or cease his witness even when he is called to manifest his faith in an environment that is hostile or indifferent. He knows that the Spirit of the Father is speaking through him (cf. Mt 10:17-20; Lk 12:11-12) and he can say with the apostles: "We are witnesses to these things, and so is the Holy Spirit" (Acts 5:32). He knows that he is not proclaiming a human truth, but the "word of God," which has an intrinsic and mysterious power of its own (cf. Rom 1:16). The supreme test is the giving of one's life, to the point of accepting death in order to bear witness to one's faith in Jesus Christ. Throughout Christian history, martyrs, that is, "witnesses," have always been numerous and indispensable to the spread of the Gospel. In our own age, there are many: bishops, priests, men and women religious, lay people-often unknown heroes who give their lives to bear witness to the faith. They are par excellence the heralds and witnesses of the faith.