St. Justin Martyr's Letter

Among many other aspects of the Church, St, Justin Martyr's letter to the Roman Emperor explaining Christianity reveals how closely traditions in the early church mirror those of modern times. There are many examples of this. One involves the congregation's use of the same word "Amen" in the early church as in today's Catholic church. Another common tradition is the readings before the Anaphora. In the early days of the Church, Christians would read the memoirs and letters of the Apostles, much like today's Church reads the Gospels and letters of the Apostles. A third similarity is the re-enactment of the Last Supper during the Anaphora and belief in the transubstantiation of the host, as well as the existence of Eucharistic ministers.

These similarities, as well as a cool look into how Church ceremonies were peformed "back in the day" also cement the faith and teaching that the Catholic Church is the true one created by Christ. Christians in the time of St. Justin Martyr were not far removed from Christ's earthly life, temporally speaking. Therefore it's valid to assume that they practiced the equivalent teachings and traditions as the ones passed down by Christ. Examining the similarities pointed out above shows that the Catholic Church is the true Church established by Christ, validating its mark as One.