In this volume from the Fathers of the Faith series, you'll be introduced to Saint Irenaeus of Lyons. Who was he? What did he teach? Where and when did he live? Why is he an important figure in the history of the Church? In this accessible, bite-sized introduction, renowned author, speaker, and television host Mike Aquilina gives an overview of Irenaeus's life as a second-century Greek and the historical surroundings that affected his life and thought. A friend of Saint Polycarp from the same town in Asia Minor, Irenaeus was born in a Christian family and eventually became a bishop. His foundational works include Against Heresies and The Demonstration of the Apostolic Preaching, and their relevance endures today. More than 1,800 years after Ireneaus' death, the U.S. bishops voted unanimously in agreement with a French initiative that Irenaeus be named a doctor of the Church, testament to the importance of his writings and teachings. In 2019, the bishops' approval was forwarded to the Vatican for consideration by Pope Francis. About the Author Mike Aquilina is the award-winning author of more than fifty books on Catholic history, doctrine, and devotion. His works have been translated into many languages. He has hosted eleven television series and several documentary films. He and his wife, Terri, have been married since 1985. Their six children and growing number of grandchildren are much loved.