'17 After leaving the crowd, he entered a house where his disciples asked him about that riddle. 18 He said to them, “ Don’t you understand either? Don’t you know that nothing from the outside that enters a person has the power to contaminate? 19 That’s because it doesn’t enter into the heart but into the stomach, and it goes out into the sewer. ” By saying this, Jesus declared that no food could contaminate a person in God’s sight.'
Mark 7:17-19 CEB
The traditional interpretation is this: Mark is telling us that Jesus just overturned the whole system of food laws–food can’t make you unclean before God, not even pig or shrimp.
Contextually there is one particularly problematic feature of such an argument: Jesus had just condemned the Pharisees for abolishing the commandments of God in favor of their own tradition. Could Jesus really, then, turn around and abolish the law of God in favor of a new tradition?
Boyarin follows the argument of Yair Furstenberg in saying no.
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Boyarin’s point is this: the kosher laws are not purity laws.
What Jesus and the Pharisees are arguing about is not whether certain foods are kosher, but whether certain ways of handling foods could make them impure.
In this context, the Pharisees have created an additional tradition: even kosher foods can be rendered unclean if eaten with defiled hands.
Jesus, according to Boyarin, is arguing against this “liberalizing” of the tradition, arguing for a more “conservative” reading of the law.
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