In other words, you're finding anything you can to justify your beliefs and truth be damned.
I think we're done here.
You have nothing to validate your beliefs that Gentiles cannot be saved through faith in Jesus.
The word "nations" in Genesis 17 means "massing" [as in people groups] according to Strong. Many Greek and Hebrew concordances such as Vine's do what is called "leading the witness", that is, they tell you how the word is to be used rather than merely giving the definition as Strong does.
You take the word "nations" to mean [non-Hebrew] Gentiles, and this is incorrect. God says that "nations" shall "come out of thee" (Abraham), and "nations" shall "be of her (Sarah.) To take "nations" to mean non-Hebrew Gentiles at this point in time Genesis was written - especially chapter 17 - means one would have to believe and accept that non-Hebrew Gentiles would have to be born from two Hebrew parents (Abraham and Sarah), and this is impossible. In context the word "nations" means [a] "massing" (of people) when one considers that Ishmael and Esau "come from the loins of Abraham" and "shall be of her" (Sarah.)
Ishamel was born a mixed heritage Hebrew from Abraham and Hagar a slave- woman. But Esau is born from Isaac who is born of Abraham and Sarah, but Jacob is the inheritor of the Promises.
Rev 5:9 WEB They sang a new song, saying, “You are worthy to take the book and to open its seals, for you were killed, and bought us for God with your blood out of every tribe, language, people, and nation,
Rom 3:29 WEB Or is God the God of Jews only? Isn’t he the God of Gentiles also? Yes, of Gentiles also,
The Abraham Covenant is between God, Abram the Hebrew and Abram's Hebrew seed. This is Scripture Jesus says cannot be broken meaning no one can add anything to Scripture, and this includes the false belief that "non-Hebrew Gentiles" are in the Abraham Covenant, and they are not.
The "Gentiles" in the New Covenant writings refer to mixed heritage Hebrews (Jew-Gentile.) These are mixed heritage Hebrews who are still Abraham's seed although they grew up among 20 generations of Hebrew-Gentile existence since the remnant returned to the Holy Land in 522 BC. The remnant that returns to the Holy Land at that time were about 10% of the total Hebrews living in the world and mostly in Gentile lands heavily influenced by Greek culture. There are approximately 15-20 generations of births and a great many of these 15-20 generations of births occurred among mixed heritage Hebrews and Gentiles who, depending on the father whether he was Hebrew or Gentile was the one who raised their children up knowing of their Hebrew heritage or not knowing their Hebrew heritage. But if these mixed heritage seed of Abraham became born again most likely they were uncircumcised because they were raised as Gentile in Gentile lands living in Greek culture. The Jews did not see these mixed heritage Hebrews as Jews but as "Gentile" in the same attitude that Samaritans who were of mixed heritage were called "Samaritan" and not "Jew." It is these conversions of mixed heritage Hebrews who were Abraham's seed but not circumcised which was the issue dealt with by the Jerusalem Church leadership in Acts 15, whether these mixed heritage Hebrews should be circumcised. They were not circumcised but the council gave them four precepts of the Law of Moses to follow. If these were non-Hebrew Gentiles, the Jerusalem Church leadership would not give them anything of the Law of Moses to follow for they knew better than to add Gentiles to the Abraham Covenant by circumcising them or giving them the four precepts of the Law of Moses to follow. They would never have done to non-Hebrew Gentiles what they decided to be done (Law of Moses) if they were purely non-Hebrew Gentile. To circumcise these non-Hebrew Gentiles or give them the Law of Moses to obey would have caused an uproar among the Judaizers and the common Hebrew/Jewish folk and the apostles would have lost all their credibility among the Hebrew/Jewish population. Every Hebrew/Jew of age would know that there are no non-Hebrew Gentiles in the Abrahamic Covenant and if the apostles made them to be circumcised or follow the Law of Moses it would not be hidden and the Jews would have run the apostles out of the city and maybe persecute them or kill them.
But the Jerusalem Council was not dealing with non-Hebrew Gentiles. They were dealing with Hebrews of mixed heritage (Jew-Gentile) descent and as mixed heritage there would be no problem circumcising them or giving them the four precepts of the Law to follow.
Your quoting of Revelation 5:9 reads:
9 And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast
redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation;
10 And hast made us unto our God kings and priests: and we shall reign on the earth. Rev. 5:8–10.
Verse 9 is supported by Galatians 4:4-5.
4 But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law,
5
To redeem them that were under the law, that we might receive the adoption of sons. Gal. 4:4–5.
And Revelation 5:10 is an Old Testament reference John is making because in the Old Testament which are the Hebrew Scripture God calls His people and apple of His eye Israel "kings" and "priests." Not only that but those that are redeemed (those under the Law meaning the Hebrews) God calls OUT OF every Gentile place He scattered His people to. It is Abraham's seed who is being called OUT OF "every kindred, tongue, and people and nation" because that's where God scattered His people and where they live: in Gentile lands.