I agree with the scriptures you present. But these passages inform our understanding of the Physical nation of Jewish people that God will bring into existence. According to John 3:3, the entire nation of physical Israel will consist of born again people. According to John 3:5, the entire population of physical, national Israel will enter the kingdom of God through the new birth (just like everyone else) and just as Peter says, the physical, national Israel will finally be the consecrated nation she was meant to be.
Then why would Paul teach that not all descended from Israel are Israel and only a remnant would escape Gods judgment??
6 However, it is not as though God’s word has failed [coming to nothing]. For not all who are descended from Israel (Jacob) are [the true] Israel; 7 and they are not all the children of Abraham because they are his descendants [by blood], but [the promise was]: “Your descendants will be named through Isaac” [though Abraham had other sons]. 8 That is, it is not the children of the body [Abraham’s natural descendants] who are God’s children, but it is the children of the promise who are counted as [Abraham’s true] descendants.
27 And Isaiah calls out concerning Israel: “Though the number of the sons of Israel be like the sand of the sea, it is only the remnant [a small believing minority] that will be saved [from God’s judgment]; 28 For the Lord will execute His word upon the earth [He will conclude His dealings with mankind] completely and without delay.”
So only those born again will see and receive the promise of the kingdom inheritance.
Rom 11
1
9 You will say then, “Branches were broken off so that I might be grafted in.” 20 That is true. They were broken off because of their unbelief, but you stand by your faith [as believers understanding the truth of Christ’s deity]. Do not be conceited, but [rather stand in great awe of God and] fear [Him]; 21 for if God did not spare the natural branches [because of unbelief], He will not spare you either. 22 Then appreciate the gracious kindness and the severity of God: to those who fell [into spiritual ruin], severity, but to you, God’s
gracious kindness—if you continue in His kindness [by faith and obedience to Him]; otherwise you too will be cut off. 23 And even they [the unbelieving Jews], if they do not continue in their unbelief, will be grafted in; for God has the power to graft them in again. 24 For if you were cut off from what is by nature a wild olive tree, and against nature were grafted into a cultivated olive tree, how much easier will it be to graft these who are the natural
branches back into [the original parent stock of] their own olive tree?
25 I do not want you, believers, to be unaware of this mystery [God’s previously hidden plan]—so that you will not be wise in your own opinion—that a partial hardening has [temporarily] happened to Israel [to last] until the full number of the Gentiles has come in; 26 and so [at that time] all Israel
[that is, all Jews who have a personal faith in Jesus as Messiah] will be saved; just as it is written [in Scripture],
“The Deliverer (Messiah) will come from Zion,
He will remove ungodliness from Jacob.”
27
“This is My covenant with them,
When I take away their sins.”