Marcus Grodi and Msgr. Jeffrey Steenson continue their discussion of "Against Heresies" by St Irenaeus of Lyons, this time digging into chapters 12-16 of Book IV.

When it comes to doctrinal disputes among Christian denominations, or even debates within the Catholic Church, it can be tempting to fixate on one passage and isolate it from the whole of Scripture. But St. Irenaeus reminds us that each verse is both applicable to the argument or topic at hand, but also part of a larger story that has to be taken into account in order to understand its proper meaning.

Find more episodes at www.deepinhistory.com.

Marcus Grodi and Msgr. Jeffrey Steenson resume their discussion of Against Heresies by St. Irenaeus of Lyons by continuing through Book 12.

They look at what St. Irenaeus had to say about natural law, and the order with which God established His creation. The incarnation of Jesus does not contradict either the natural law that is common to all humanity, nor the revealed law given through Moses; rather, it fulfills both the natural and reveal law and shows God's plan for His people.

Marcus Grodi and Msgr. Jeffrey Steenson continue their study of "Against Heresies" by St. Irenaus of Lyons with a discussion of the true meaning of Christian tradition.

Marcus Grodi and Msgr. Jeffrey Steenson continue their studies of St. Irenaeus of Lyons by digging into Chapter 9 of Book IV of Against Heresies.

St. Irenaeus reminds his readers that the God of faith is also the God of reason, the God who created the dust and the stars is the same God who created humans in His image, and that the God of ancient times is the God who is living and active in the world today.

God is one, and the truth He reveals in reason and revelation are one. Marcus and Msgr. Steenson explore how St. Irenaeus makes that case to those who would say that there are competing divinities who oversee of different parts of creation and salvation history.

For more episodes, visit deepinhistory.com.

Marcus Grodi and Msgr. Jeffrey Steenson continue their study of “Against Heresies” by St. Irenaeus of Lyons by looking at the relationship between Jesus and the Father.

Jesus does not merely teach us about the Father; He is one with the Father. He does not reveal to us a different God than is testified to by the law and the prophets; He reveals through Himself the fulfillment of what God the Father was teaching us all along through the law and the prophets.

Marcus Grodi and Msgr. Jeffrey Steenson continue their study of "Against Heresies" by St. Irenaeus of Lyons by diving further into Book 4 of this important early Christian work.

Christ came to establish a new covenant in His blood, but in doing so, he was not abolishing the law, but fulfilling it. St. Irenaeus reminds us that what Jesus reveals about the Father in the Gospels is not in contradiction to the witness of the Old Testament, but rather in continuity with the revelation of God to His people.

Marcus Grodi and Msgr. Jeffrey Steenson continue their study of Against Heresies by St. Irenaeus of Lyons by beginning Book 4 of one of the most famous and important works of early Christian literature.

Here, St. Irenaeus deals with the Marcionite heresy, which pitted the New Testament against the Old Testament, and Jesus against the traditional Jewish concept of God. Irenaeus defends the orthodox Christian teaching that Jesus Christ is co-eternal with the Father as the second person of the Trinity, and who became flesh and dwelt among us, as St. John testifies in his Gospel.

Marcus Grodi and Msgr. Jeffrey Steenson continue their study of Book 3 of Against Heresies by St. Irenaeus of Lyons by looking at the meaning and effect of the work of Jesus Christ.