Apostolic and missionary fruitfulness is not principally due to programmes and pastoral methods that are cleverly drawn up and "efficient", but is the result of the community's constant prayer (cf. "Evangelii Nuntiandi," 75). Moreover, for the mission to be effective, communities must be united, that is, they must be "of one heart and soul" (cf. Acts 4:32), and they must be ready to witness to the love and joy that the Holy Spirit instils in the hearts of the faithful (cf. Acts 4:32).