Thank you for replying with so much from the Bible.
I am a difficult person, probably slower than average. As I read those passages, I kept thinking about how many ways they have been interpreted and the different ways even key words in each one can be meant.
Long before Moses brought the law, God made a covenant with Abraham that involved so little. There were no 10 commandments, only circumcision as a sign. Were they not identified with as God's people, even while there was no law?
I agree that following the law makes you a Jew by tradition, but does it make you child of Abraham? Does it make you a child of God. And I am sure you agree it does not, and it never could on its own unless you were able to truly keep it.
And now we have the law as a lesson to the power of Grace. Paul revealed it to us, and God made us dead to it thanks to Jesus.
So I do not follow the conclusion that the law is needed to mark you as God's people when for hundreds of years before it there were Gods people, and today there are billions who are dead to it.
I do not understand it's part in the future as it relates to God's people. (The only thing I can see us using it for is to judge others who are still under it.)
If God's people do not need it, if they can be identified as his people without it, why would his people return to it in the future? I do not assume there is no answer, I just want/hope the answer to make(s) sense to me.
Consider that you asked about the Law. I answered on that. But it was not their sole means of Identity. Also, I was talking about Israel, not the Body of Christ.
Romans 2:
17. Behold, thou art called a Jew, and restest in the law, and makest thy boast of God,
18. And knowest his will, and approvest the things that are more excellent, being instructed out of the law;
19. And art confident that thou thyself art a guide of the blind, a light of them which are in darkness,
20. An instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law.
24. For the name of God is blasphemed among the Gentiles through you, as it is written.
25. For circumcision verily profiteth, if thou keep the law: but if thou be a breaker of the law, thy circumcision is made uncircumcision.
28. For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh:
29. But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
Romans 3:
1. What advantage then hath the Jew? Or what profit is there of circumcision?
2. Much every way: chiefly, because that unto them were committed the oracles of God.
3. For what if some did not believe? Shall their unbelief make the faith of God without effect?
Romans 9:
1. I say the truth in Christ, I lie not, my conscience also bearing me witness in the Holy Ghost,
2. That I have great heaviness and continual sorrow in my heart.
3. For I could wish that myself were accursed from Christ for my brethren, my kinsmen according to the flesh:
4. Who are Israelites; to whom pertaineth the adoption, and the glory, and the covenants, and the giving of the law, and the service of God, and the promises;
5. Whose are the fathers, and of whom as concerning the flesh Christ came, who is over all, God blessed for ever. Amen.
Jeremiah 31:
31. Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah:
32. Not according to the covenant that I made with their fathers in the day that I took them by the hand to bring them out of the land of Egypt; which my covenant they brake, although I was an
husband unto them, saith the LORD:
33. But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their
God, and they shall be my people.
34. And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them,
saith the LORD: for I will forgive their iniquity, and I will remember their sin no more.
35. Thus saith the LORD, which giveth the sun for a light by day, and the ordinances of the moon and of the stars for a light by night, which divideth the sea when the waves thereof roar; The
LORD of hosts is his name:
36. If those ordinances depart from before me, saith the LORD, then the seed of Israel also shall cease from being a nation before me for ever.
Ezekiel 36:
22. Therefore say unto the house of Israel, thus saith the Lord GOD; I do not this for your sakes, O house of Israel, but for mine holy name's sake, which ye have profaned among the heathen, whither ye went.
23. And I will sanctify my great name, which was profaned among the heathen, which ye have profaned in the midst of them; and the heathen shall know that I am the LORD, saith the Lord GOD, when I shall be sanctified in you before their eyes.
24. For I will take you from among the heathen, and gather you out of all countries, and will bring you into your own land.
25. Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
26. A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
27. And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
28. And ye shall dwell in the land that I gave to your fathers; and ye shall be my people, and I will be your God.