I won’t lie. I still don’t understand Romans. Paul’s theology is greater than I am. I think I get what he’s saying in Galatians. I feel good about Hebrews. Romans, however, is still beyond me. I’m making progress though.
For instance, Romans 3:31 often gets used, in Reformed circles at least, to teach the fundamental continuity of the law between Old and New Testaments. Paul writes:
Do we then make void the law through faith? Certainly not! On the contrary, we establish the law.
This can’t mean that our faith establishes a new system of circumsion and kosher foods. That would contradict Paul’s whole point. Nor is it simply a “moral law” continuity, though I think it is that.
Rather I think Paul is using prophetic rhetoric and is reinforcing what he has already said in 3:27:
Where is boasting then? It is excludeed. By what law? Of works? No, but by the law of faith.
The older Christians were able to speak of the “new law.” I think they are correct. Jesus brings a new law (which has a fundamental moral continuity), and it is of faith.
Hebrews 7:12 supports this as well. Whenver you the high priest dies, you have a change in law.