In telling the disciples to be his witnesses, the risen Lord also tells them where they are being sent: “…in Jerusalem and in all Judea and Samaria and to the ends of the earth” (Acts 1:8). Here we clearly see the universal character of the disciples’ mission. We also see the “centrifugal” geographical expansion, as if in concentric circles, of the mission, beginning with Jerusalem, which Jewish tradition considered the centre of the world, to Judea and Samaria and to “the ends of the earth”. The disciples are sent not to proselytize, but to proclaim; the Christian does not proselytize. The Acts of the Apostles speak of this missionary expansion and provide a striking image of the Church “going forth” in fidelity to her call to bear witness to Christ the Lord and guided by divine providence in the concrete conditions of her life. Persecuted in Jerusalem and then spread throughout Judea and Samaria, the first Christians bore witness to Jesus everywhere (cf. Acts 8:1, 4).