Redemptoris Missio §21

²¹ "At the climax of Jesus' messianic mission, the Holy Spirit becomes present in the Paschal Mystery in all of his divine subjectivity: as the one who is now to continue the salvific work rooted in the sacrifice of the cross. Of course Jesus entrusts this work to human beings: to the apostles, to the Church. Nevertheless, in and through them the Holy Spirit remains the transcendent and principal agent for the accomplishment of this work in the human spirit and in the history of the world." The Holy Spirit is indeed the principal agent of the whole of the Church's mission. His action is preeminent in the mission ad gentes , as can clearly be seen in the early Church: in the conversion of Cornelius (cf. Acts 10), in the decisions made about emerging problems (cf. Acts 15) and in the choice of regions and peoples to be evangelized (cf. Acts 16:6ff). The Spirit worked through the apostles, but at the same time he was also at work in those who heard them: "Through his action the Good News takes shape in human minds and hearts and extends through history. In all of this it is the Holy Spirit who gives life."