St. Irenaeus on the Unity and Orthodoxy of the Faith

Today is the feast day of St. Irenaeus of Lyons (or Lugdunum, by its Roman name). Irenaeus was born in the first half of the second century, ca. A.D. 125, probably in Smyrna in Asia Minor. He was raised in a Christian home, and became a disciple of St. Polycarp, who had been a disciple …