"Interviewer: What is meant by “theology of credibility”? Tanzella-Nitti: By this expression we mean a theology that reflects on the reasonableness of believing in Revelation, first and foremost in the Revealer par excellence, Jesus of Nazareth. Classical apologetics, which accompanied us until the dawn of the Second Vatican Council, did not have a fully theological status, but developed its arguments mainly on the logical and philosophical side. The first theology of credibility is given to us by the Gospels, when they declare, with St. Luke, that they were written so that we might realize the solidity of the teachings received, or with St. John, that those things were transmitted to us so that we might believe in Jesus Christ and so that, by believing, we might have life in him."