Perhaps for the same reasons people are today.
“What advantage do we gain by possessing a Pauline theology that lies outside and above his writings?”
In Preaching Romans, a range of scholars present their perspectives in complementary ways.
Matthew L. Skinner recommends the best recently published books in his field.
In Romans 7, sin seems to have at least as much agency as Paul does.
An annotated list by Beverly Roberts Gaventa.