Feast day: June 28
Saint Irenaeus was a second-century bishop in what is now Lyons, France. As a prolific writer, he was a key figure in the many controversies that developed as the early Church sought to clarify her Trinitarian faith. His most famous work is a series of books called Against Heresies. In it, Irenaeus stresses how crucial it was for the Church to safeguard her apostolic faith. This was the faith that Jesus had shared with the Twelve Apostles and that they had passed on to their successors.
Irenaeus is particularly concerned about Gnosticism. This was one of the false teachings about Jesus that was circulating in the Church at that time. Irenaeus’s courageous effort to defend apostolic faith against Gnosticism and other heresies can inspire us. We too need to speak the truth without fear, trusting always in God's steadfast love. (From Jesus Christ: God’s Love Made Visible [Saint Mary’s Press])
(Image Dianelos Georgoudis, CC0, via Wikimedia Commons)