Did you know that Jeremiah 31 says that ADONAI would give a new covenant to the Houses of Israel and Judah? It was never meant for anyone else!
The good news is: If you belong to YHWH/Yeshua, you are spiritually part of Israel - and as "grafted in" YHWH sees you in the same light as His "natural" children! (See Numbers 15:13-16 where He says it FOUR TIMES in a row....)
Once you have accepted the God of Abraham, Isaac and Jacob, you are not even a "Gentile" anymore - you are a HEBREW (which, in Hebrew means, "to cross over"). You have "crossed over" spiritually, and belong to HIM! Halleluyah!
Now, let's check out Jeremiah 31....
Jeremiah 31: 31 "Here, the days are coming," says ADONAI, "when I will make a new covenant with the house of Isra'el and with the house of Y'hudah. 32 It will not be like the covenant I made with their fathers on the day I took them by their hand and brought them out of the land of Egypt; because they, for their part, violated my covenant, even though I, for my part, was a husband to them," says ADONAI.
33 "For this is the covenant I will make with the house of Isra'el after those days," says ADONAI: "I will put my Torah within them and write it on their hearts; I will be their God, and they will be my people. 34 No longer will any of them teach his fellow community member or his brother, 'Know ADONAI'; for all will know me, from the least of them to the greatest; because I will forgive their wickednesses and remember their sins no more."
Many don't seem to realize that Jeremiah 31:30-34 is NOT talking about "Gentiles" or "Christians"; it says God is going to make a "new covenant" with the Torah observant Houses of Israel and Judah! So, where are "Christians" in this? As "grafted in to the Olive Tree" Christians are "one in Messiah" (Galatians 3:28)...But that never meant Gentiles would get to change the rules or live under separate rules. YHWH was clear about that:
Numbers 15: 13 "'Everyone who is native-born must do these things in this way when he brings an offering made by fire as an aroma pleasing to the LORD. 14 For the generations to come, whenever an alien or anyone else living among you presents an offering made by fire as an aroma pleasing to the LORD, he must do exactly as you do.
15 The community is to have the same rules for you and for the alien living among you; this is a lasting ordinance for the generations to come. You and the alien shall be the same before the LORD: 16 The same laws and regulations will apply both to you and to the alien living among you.'" (CJB)
Please re-read the above in case you missed it: Any Torah-less non-Jew/Hebrew/Israelite who does not yet believe in the God of Abraham, Isaac and Jacob is an "alien"/foreigner. However, if they do wish to accept Him, then they are to do exactly as those who are already belong to Him!
"Living among" means not necessarily physically, but rather, it refers to all those who have accepted the God of Abraham, Isaac and Jacob. They MUST be Torah observant, just like the Houses of Israel and Judah were with whom God made His New Covenant (Jeremiah 31:32)!
Romans 10: 12. And in this, it discriminates neither Jews nor Gentiles. For there is one, Master YHWH, over them all, who is abundantly generous towards every one that calls on him. 13. For everyone that will call on the name of Master YHWH, will have life. (AENT)