The following article is entitled Saint Paul’s experience on the road to Damascus. Saint Paul’s experience on the road to Damascus, where he meets the Risen Christ, will be presented, in my article, from the inside (the testimony of Paul expressed in his letters) to the outside (saint Luke’s account in Acts: especially Acts 9:1-19a; with references also to the other two stories of Luke on the same event: Acts 22:1-21 and Acts 26:9-23). In order to analyze Paul’s testimony on the road to Damascus as it is presented in his letters we will focus on the First Letter to the Corinthians (1Cor 15:3-11), the Letter to the Galatians (Gal 1:13-17) and the Letter to the Philippians (Phil 3:1-14). My presentation will start with a brief presentation of Paul and will conclude with a look at the missionary activity of the Apostle, culminating with his martyrdom. In this article, I would like to emphasize how Paul’s “strength” meets the one of God, capable of transforming him.