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The primary mission of the Church is to preach the Gospel in such a way that a relationship between faith and life is established in each individual and in the socio-cultural context in which individuals live and act and communicate with one another. Evangelization means "bringing the Good News into all the strata of humanity, and through its influence transforming humanity from within and making it new... It is a question not only of preaching the Gospel in ever wider geographic areas or to ever greater numbers of people, but also of affecting and, as it were, upsetting, through the power of the Gospel, humanity's criteria of judgment, determining values, points of interest, lines of thought, sources of inspiration and models of life, which are in contrast with the Word of God and the plan of salvation."

--Ex Corde Ecclesiae