As Marcus Grodi and Msgr. Jeffrey Steenson continue through Book II of Against Heresies by St. Irenaeus of Lyons, they continue to engage the arguments that St. Irenaeus made against the Gnosticism of his day.

They look at how St. Irenaeus defended the doctrine of the Trinity, the importance of Christ’s incarnation, the meaning of the earthly ministry of Jesus, and the application of Old Testament prophecy.

Marcus and Msgr. Steenson look at the errors being promoted by the Gnostics in the time of St. Irenaeus, and make fascinating connections between them and common misunderstandings about Christianity in our contemporary circumstances.