Technicians use diagnosing tools to identify equipment problems.  However, these same tools are not able to resolve the problem or remedy the condition, they can only point out the problem.

Such is the Law of God.  The Law of God is a rule or measuring stick to show us that we fall short of God’s standard of righteousness.  For all have sinned and come short of the glory of God. Romans 3:23

The Law of God cannot furnish the righteousness needed to meet God’s standard.  Is the law then against the promises of God?  God forbid (may it never be): for if there had been a law given which could have given life, verily righteousness should have been by the law. Galatians 3:21

Unfortunately many try to keep the law and deceive themselves into thinking that they can be saved by keeping the law (or a set of rules*)….by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin. Romans 3:20

So for what purpose does the law of God serve?  Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.  Galatians 3:24

Go ahead, make up your own set of rules to establish your own righteousness…..and you will fail to keep your own rules.

For they being ignorant of God’s righteousness, and going about to establish their own righteousness, have not submitted themselves unto the righteousness of God. Romans 10:3

And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith: Philippians 3:9

…let the word of Christ dwell in you richly…

The Law demands what we cannot give, but Christ gives grace that by faith we live!