Saint Justin was converted to Christianity around 130 A.D., at which time he began defending and teaching about the Christian faith in both Asia Minor and Rome.
Saint Justin was martyred in 165 A.D. His feast day is celebrated on April 14.
The Works of Saint Justin the Martyr
Most of the information recorded about Saint Justin was written in his own works where he discusses his philosophies and his conversion.
Apology – In this work, Saint Justin refers to himself as, "Justin, the son of Priscos, son of Baccheios, of Flavia Neapolis, in Palestinian Syria". Saint Justin talks about his conversion saying, “"When I was a disciple of Plato, hearing the accusations made against the Christians and seeing them intrepid in the face of death and of all that men fear, I said to myself that it was impossible that they should be living in evil and in the love of pleasure" (II Apol., xviii, 1).
Dialogue – In this work of Saint Justin, he insinuates that he was a pagan, uncircumcised, well educated in philosophy, and knew nothing about God. He describes his meeting with an old man who told him that the only way to know God was to be instructed by the great Prophets and the Holy Spirit.
These two works of Saint Justin Martyr exhibit the parts of Christianity that were most influential to him. These aspects of Christianity were moral beauty seen in Aplogies and truth seen in Dialogue.