What if almost everything you were taught about Old Testament purity laws was wrong?
Most Christians hear “impurity” and immediately think sin. We’ve been taught that the purity system was about moral failure, that sacrifice was primitive and empty, and that Jesus came to sweep the whole oppressive thing away. Dr. Jonathan Klawans, Professor of Religion and Jewish Studies at Boston University, says we’ve collapsed two completely different categories into one confused mess, and it’s been distorting how we read the Bible for centuries.
In this conversation, Dr. Klawans walks us through the critical distinction between ritual impurity and moral impurity, two systems the Hebrew Bible treats as entirely separate. Ritual impurity comes from things like childbirth, menstruation, and touching a corpse. These aren’t sins. They’re natural, unavoidable, sometimes even commanded. Moral impurity is something else entirely: idolatry, sexual transgression, bloodshed. These defile the land, pollute the Temple, and if left unaddressed, drive out God’s presence.
We dig into why the prophets weren’t rejecting sacrifice but calling out theft and injustice. We explore how sacrifice functioned as imitatio Dei, the imitation of God, from the careful shepherding of unblemished animals to the priest examining the kidneys and heart. We discuss how both Christian and Jewish traditions have imposed later theological frameworks onto ancient texts, and what it costs us when we do. And we ask the hard question: What was Jesus actually doing when he interacted with purity and the Temple?
Dr. Klawans is the author of four books with Oxford University Press, including the award-winning Impurity and Sin in Ancient Judaism and Purity, Sacrifice, and the Temple. His work has reshaped how scholars understand the ancient world that shaped the Bible.
In this episode, you will learn:
– The difference between ritual impurity and moral impurity and why conflating them causes so much confusion
– Why becoming ritually impure was sometimes unavoidable and even commanded
– How moral impurity defiles the land and the Temple, and what happens when it goes unaddressed
– What the prophets were actually criticizing when they seemed to reject sacrifice
– How sacrifice functioned as imitatio Dei, imitating God through the entire process
– The role of sacrifice in attracting and maintaining God’s presence
– How supersessionist frameworks (both Christian and Jewish) distort our reading of ancient sources
– What really happened to Judaism after the Temple’s destruction in 70 AD
– How to understand Jesus’s interactions with purity and the Temple
GUEST: Dr. Jonathan Klawans
Professor of Religion and Jewish Studies, Boston University
Author of Impurity and Sin in Ancient Judaism, Purity, Sacrifice, and the Temple, Josephus and the Theologies of Ancient Judaism, and Heresy, Forgery, Novelty
BOOKS:
Purity, Sacrifice, and the Temple: https://a.co/d/0bXkmvkj
Impurity and Sin in Ancient Judaism: https://www.amazon.com/Impurity-Ancient-Judaism-Jonathan-Klawans/dp/0195177657
Boston University Faculty Page: https://www.bu.edu/religion/faculty/jonathan-klawans/
STAY CONNECTED:
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The Revelation Reset: https://www.amazon.com/Revelation-Reset-Reclaiming-Optimistic-Eschatology-ebook/dp/B0D2TXFX3J
