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.