Hello Mike.
I think the whole problem for you is that Christ had to come save us from ourselves because the law defined sin Rom 3:20.
You may have the impression Mike, that the verse (Romans 3-20) presents some type of problem for me. I can put your
mind at rest and I can state that the law does define sin. Though Mike, there are a multitude of sins that the law does not
define also.
If we have a closer look at the verse you quoted (Romans 3-20), and look at the previous line below.
Romans 3:19-20
19 Now we know that whatever the Law says,
it speaks to those who are under the Law, so that every mouth may be closed
and all the world may become accountable to God; 20 because by the works of the Law no flesh will be justified in His sight;
for through the Law comes the knowledge of sin.
We know that the law is speaking
to those under the law, the Jews were under the law of Moses. One does not need to be
under the law of Moses, to recognize what sin is. One only needs to view the law to realize what sin is. Though there is a very
sharp distinction between being under the dictates of the law (Jews), in a legal sense, and not being under the law (Gentiles).
Romans certainly knew nothing of the law at this time.without the law they obviously would not know what sin was.
exception maybe in common knowledge of how to treat one another that would by nature fulfill some aspects of the law.
Correct Mike, the Romans never grew up under the law of Moses, as Jesus and Paul did. Rome was a Gentile state with it's
own legal system. To attempt to force the Romans into obedience to the law of Moses would be absurd. For the Romans would
then be under two distinct legal systems. Now a dual legal code would be far too complex for any Roman to be expected to follow.
The definition of sin is defined by the law, I agree. Anything that is not of Faith is also sin. The good that you know you should do,
but don't do, is also sin! There is no quick and simple list of sins available to us. Sin at many levels, is simply any behavior that is
the opposite of love. The trick to understanding the absolute fulfillment of any legal system is through the implementation of love
on every occasion.
Hence Mike, the attempt to fulfill the letter of the law of Moses is a very deep error. There was only one way to fulfill the law in
the scripture. Christ has fulfilled the law for us, and Christ gave us the Holy Spirit who provides us with an abounding love. Thus this
God given love is the fulfillment of the law.