If the Law of God was done away with then there is no longer sin.
Romans 7:8b “For apart from the law, sin is dead.”
However Paul, who was instructed according to the strict manner of the law of our fathers said,
“Therefore the law indeed is holy, and the commandment holy, and righteous, and good.” Romans 7:12.
Keep this in mind when reading Romans chapters 8 and 10. Paul is not double minded.