The document discusses different models of understanding the Church: as Institution, Communion, Sacrament, Herald, Servant, and Community of Disciples. It analyzes the strengths and weaknesses of each model. Finally, it explains that the models work together in a spiral, with the Church as Sacrament founding the community, which becomes the Herald and leads to the Institution that codifies beliefs and compels the Church to act as Servant and develop as a disciple community striving to imitate Christ.