Romans 4:13-14, For the promise, that he should be the heir of the world, was not to Abraham, or to his seed, through the law, but through the righteousness (holy) of faith. For if they which are of the law (unholy) be heirs, faith is made void, and the promise made of none effect:
I came not to call the righteous (the holy),
but sinners (unrighteous / unholy) to repentance.
The righteous are the holy, thus, the work of the cross/law on them is complete and they no longer need grace, nor a Mediator, for now they have the holy love and power of God as they are spiritual holy heirs, brought to Christ by the law/schoolmaster, then redeemed from the law by Christ, unlike the powerless unholy unrighteous sinners they once were who Jesus specifically came for. The good news of the Gospel (the law) is Good news for the spirit, it's terrible, terrible news for the flesh, therefore, the cross-less masses of the children of perdition denounce the authority of the life-saving Holy Word of God and follow a man in their unbelief and failure to seek out and find the kingdom of God and His righteousness, or more simply put, holiness.
The law the worldly church rejects is the law that brings us to Christ.
Galatians 3:23-25, But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed. Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith. But after that faith is come, we are no longer under a schoolmaster.
Study this wonderful Galatians Truth!
Until faith comes the unholy has only the Schoolmaster or law,
Then, the Law brings us to Christ!
(see ahead: The Mediator)
The Schoolmaster can only bring those under the law to Christ!
Miss the Law of God and you'll miss Christ!
BE YE HOLY!
This, too, is in the Law of Christ!
This following promise was made to the unrighteous (unholy),
Same being the unholy!
As faith comes by hearing and hearing by the word of God, faith (and righteousness) must be time-honored. The evidence of belief is obedience, and the evidence of obedience is righteousness, or holiness. "But before faith came, we were kept under the law ... " Galatians 3:23.
The grace of God for the unholy simulates the power of God for the holy.