Whilst stressing the importance of grace and faith, the Catholic bible emphasizes the desirability of wisdom , reason, the need for the faithful to be able to explain their faith and the fact that the existence and some characteristics of God are ascertainable by reason. The real key to the New Testament is its emphasis on truth and on Jesus being the truth. Christianity asserts not only that faith in Christ is reasonable and rational but also that events in the life of Christ actually occurred as a matter of human history . As a result, the events described in the New Testament can be the subject of investigation by the application of historical method , archeology , psychology , medicine and other academic disciplines. The Catholic Church, also places great emphasis on reason and truth and has a long history of engagement considering and benefitting from a relationship between philosophy (an attempt by rational and reasoned consideration to answer questions of life’s meaning including the identification of principles underlying knowledge and being ) and theology (the exploration of the content and implications of divine revelation ). This paper seeks to explain the Catholic view of the relationship between philosophy and theology and to demonstrate their integration with each other. To do so the paper examines why philosophy and theology work, how they relate to each other in Catholic thought and how that relationship can be reconciled with the Magisterium. It concludes with a consideration of the present need for a relationship between philosophy and theology. It argues that the Jesus of History and the Christ of the Catholic faith are one and the same.