If the law of God is not the law of Moses, why did James teach the law of Moses to the church, putting them, as you say, under the curse of the law?
22 But prove yourselves doers of the word, and not merely hearers who delude themselves. 23 For if anyone is a hearer of the word and not a doer, he is like a man who looks at his natural face in a mirror; 24 for once he has looked at himself and gone away, he has immediately forgotten what kind of person he was. 25 But one who looks intently at the perfect law, the law of liberty, and abides by it, not having become a forgetful hearer but an effectual doer, this man will be blessed in what he does. 26 If anyone thinks himself to be religious, and yet does not bridle his tongue but deceives his own heart, this man's religion is worthless. 27 Pure and undefiled religion in the sight of our God and Father is this: to visit orphans and widows in their distress, and to keep oneself unstained by the world.
1 My brethren, do not hold your faith in our glorious Lord Jesus Christ with an attitude of personal favoritism. 2 For if a man comes into your assembly with a gold ring and dressed in fine clothes, and there also comes in a poor man in dirty clothes, 3 and you pay special attention to the one who is wearing the fine clothes, and say, "You sit here in a good place," and you say to the poor man, "You stand over there, or sit down by my footstool," 4 have you not made distinctions among yourselves, and become judges with evil motives? 5 Listen, my beloved brethren: did not God choose the poor of this world to be rich in faith and heirs of the kingdom which He promised to those who love Him? 6 But you have dishonored the poor man. Is it not the rich who oppress you and personally drag you into court? 7 Do they not blaspheme the fair name by which you have been called? 8 If, however, you are fulfilling the royal law according to the Scripture, "YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF," you are doing well. 9 But if you show partiality, you are committing sin and are convicted by the law as transgressors. 10 For whoever keeps the whole law and yet stumbles in one point, he has become guilty of all. 11 For He who said, "DO NOT COMMIT ADULTERY," also said, "DO NOT COMMIT MURDER." Now if you do not commit adultery, but do commit murder, you have become a transgressor of the law. 12 So speak and so act as those who are to be judged by the law of liberty. 13 For judgment will be merciless to one who has shown no mercy; mercy triumphs over judgment.
14 What use is it, my brethren, if someone says he has faith but he has no works? Can that faith save him? 15 If a brother or sister is without clothing and in need of daily food, 16 and one of you says to them, "Go in peace, be warmed and be filled," and yet you do not give them what is necessary for their body, what use is that? 17 Even so faith, if it has no works, is dead, being by itself.
(James 1:22-27 NASB, James 2:1-17 NASB)
Now you do have to be somewhat familiar with the law to see all the references to the law of Moses he makes here. I used to be like so many in the church, I never read the law to even know James was practically teaching right out of the law in this letter to the church. Which is so contrary to what so many churches teach, that the law of Moses was utterly disposed of in favor of some kind of vague, ill-defined law of lovey feelings that you either obeyed or didn't obey depending on whether or not the Holy Spirit makes it happen in you or not. And if he does not, all is still well because it would be works for you to purposely intervene in the outcome.
I guess it's impossible that the Spirit of God could actually inhabit the law of Moses and speak to someone's heart and lead them into the obedience it teaches (see passage above). That has to come from outside of the law of Moses, right?