99 Theological work in the Church is first of all at the service of the proclamation of the faith and of catechesis. Proclamation or kerygma is a call to conversion, announcing the truth of Christ, which reaches its summit in his Paschal Mystery: for only in Christ is it possible to know the fullness of the truth which saves (cf. Acts 4:12; 1 Tm 2:4-6). In this respect, it is easy to see why, in addition to theology, reference to catechesis is also important, since catechesis has philosophical implications which must be explored more deeply in the light of faith. The teaching imparted in catechesis helps to form the person. As a mode of linguistic communication, catechesis must present the Church's doctrine in its integrity, demonstrating its link with the life of the faithful. The result is a unique bond between teaching and living which is otherwise unattainable, since what is communicated in catechesis is not a body of conceptual truths, but the mystery of the living God. Philosophical enquiry can help greatly to clarify the relationship between truth and life, between event and doctrinal truth, and above all between transcendent truth and humanly comprehensible language. This involves a reciprocity between the theological disciplines and the insights drawn from the various strands of philosophy; and such a reciprocity can prove genuinely fruitful for the communication and deeper understanding of the faith.
Source: Fides et Ratio (Vatican.va)