Pope John Paul II
Redemptoris Missio §17
Redemptoris Missio: On the Permanent Validity of the Church's Missionary Mandate
17 Nowadays the kingdom is much spoken of, but not always in a way consonant with the thinking of the Church. In fact, there are ideas about salvation and mission which can be called "anthropocentric" in the reductive sense of the word, inasmuch as they are focused on man's earthly needs. In this view, the kingdom tends to become something completely human and secularized; what counts are programs and struggles for a liberation which is socio-economic, political and even cultural, but within a horizon that is closed to the transcendent. Without denying that on this level too there are values to be promoted, such a notion nevertheless remains within the confines of a kingdom of man, deprived of its authentic and profound dimensions. Such a view easily translates into one more ideology of purely earthly progress. The kingdom of God, however, "is not of this world...is not from the world" (Jn 18:36). There are also conceptions which deliberately emphasize the kingdom and which describe themselves as "kingdom-centered." They stress the image of a Church which is not concerned about herself, but which is totally concerned with bearing witness to and serving the kingdom. It is a "Church for others" just as Christ is the "man for others." The Church's task is described as though it had to proceed in two directions: on the one hand promoting such "values of the kingdom" as peace, justice, freedom, brotherhood, etc,, while on the other hand fostering dialogue between peoples, cultures and religions, so that through a mutual enrichment they might help the world to be renewed and to journey ever closer toward the kingdom. Together with positive aspects, these conceptions often reveal negative aspects as well. First, they are silent about Christ: the kingdom of which they speak is "theocentrically" based, since, according to them, Christ cannot be understood by those who lack Christian faith, whereas different peoples, cultures and religions are capable of finding common ground in the one divine reality, by whatever name it is called. For the same reason they put great stress on the mystery of creation, which is reflected in the diversity of cultures and beliefs, but they keep silent about the mystery of redemption. Furthermore, the kingdom, as they understand it, ends up either leaving very little room for the Church or undervaluing the Church in reaction to a presumed "ecclesiocentrism" of the past, and because they consider the Church herself only a sign, for that matter a sign not without ambiguity.
Source: Redemptoris Missio (Vatican.va)