You have yet to deal, seriously, which the passages I posted.
Christians believe that Jesus Christ is Israel - Matthew says
Matthew 2:13-15 Now when they had departed, behold, an angel of the Lord appeared to Joseph in a dream and said, "Rise, take the child and his mother, and flee to Egypt, and remain there until I tell you, for Herod is about to search for the child, to destroy him."
14 And he rose and took the child and his mother by night and departed to Egypt
15 and remained there until the death of Herod. This was to fulfil what the Lord had spoken by the prophet, "Out of Egypt I called my son."
And Paul teaches that Christians are united with Jesus Christ
Romans 6:1-14 What shall we say then? Are we to continue in sin that grace may abound?
2 By no means! How can we who died to sin still live in it?
3 Do you not know that all of us who have been baptised into Christ Jesus were baptised into his death?
4 We were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life.
5 For if we have been united with him in a death like his, we shall certainly be united with him in a resurrection like his.
6 We know that our old self was crucified with him in order that the body of sin might be brought to nothing, so that we would no longer be enslaved to sin.
7 For one who has died has been set free from sin.
8 Now if we have died with Christ, we believe that we will also live with him.
9 We know that Christ, being raised from the dead, will never die again; death no longer has dominion over him.
10 For the death he died he died to sin, once for all, but the life he lives he lives to God.
11 So you also must consider yourselves dead to sin and alive to God in Christ Jesus.
12 Let not sin therefore reign in your mortal body, to make you obey its passions.
13 Do not present your members to sin as instruments for unrighteousness, but present yourselves to God as those who have been brought from death to life, and your members to God as instruments for righteousness.
14 For sin will have no dominion over you, since you are not under law but under grace.
And Paul teaches that because of their union with Jesus Christ Christians have become the body of Christ
Romans 12:3-8 For by the grace given to me I say to everyone among you not to think of himself more highly than he ought to think, but to think with sober judgement, each according to the measure of faith that God has assigned.
4 For as in one body we have many members, and the members do not all have the same function,
5 so we, though many, are one body in Christ, and individually members one of another.
6 Having gifts that differ according to the grace given to us, let us use them: if prophecy, in proportion to our faith;
7 if service, in our serving; the one who teaches, in his teaching;
8 the one who exhorts, in his exhortation; the one who contributes, in generosity; the one who leads, with zeal; the one who does acts of mercy, with cheerfulness.
1 Corinthians 12:12-31 For just as the body is one and has many members, and all the members of the body, though many, are one body, so it is with Christ.
13 For in one Spirit we were all baptised into one body--Jews or Greeks, slaves or free--and all were made to drink of one Spirit.
14 For the body does not consist of one member but of many.
15 If the foot should say, "Because I am not a hand, I do not belong to the body," that would not make it any less a part of the body.
16 And if the ear should say, "Because I am not an eye, I do not belong to the body," that would not make it any less a part of the body.
17 If the whole body were an eye, where would be the sense of hearing? If the whole body were an ear, where would be the sense of smell?
18 But as it is, God arranged the members in the body, each one of them, as he chose.
19 If all were a single member, where would the body be?
20 As it is, there are many parts, yet one body.
21 The eye cannot say to the hand, "I have no need of you," nor again the head to the feet, "I have no need of you."
22 On the contrary, the parts of the body that seem to be weaker are indispensable,
23 and on those parts of the body that we think less honourable we bestow the greater honour, and our unpresentable parts are treated with greater modesty,
24 which our more presentable parts do not require. But God has so composed the body, giving greater honour to the part that lacked it,
25 that there may be no division in the body, but that the members may have the same care for one another.
26 If one member suffers, all suffer together; if one member is honoured, all rejoice together.
27 Now you are the body of Christ and individually members of it.
28 And God has appointed in the church first apostles, second prophets, third teachers, then miracles, then gifts of healing, helping, administrating, and various kinds of tongues.
29 Are all apostles? Are all prophets? Are all teachers? Do all work miracles?
30 Do all possess gifts of healing? Do all speak with tongues? Do all interpret?
31 But earnestly desire the higher gifts. And I will show you a still more excellent way.
Paul explains that the body of Christ is the church.
Colossians 1:24-29 Now I rejoice in my sufferings for your sake, and in my flesh I am filling up what is lacking in Christ's afflictions for the sake of his body, that is, the church,
25 of which I became a minister according to the stewardship from God that was given to me for you, to make the word of God fully known,
26 the mystery hidden for ages and generations but now revealed to his saints.
27 To them God chose to make known how great among the Gentiles are the riches of the glory of this mystery, which is Christ in you, the hope of glory.
28 Him we proclaim, warning everyone and teaching everyone with all wisdom, that we may present everyone mature in Christ.
29 For this I toil, struggling with all his energy that he powerfully works within me.
Ephesians 5:22-24 Wives, submit to your own husbands, as to the Lord.
23 For the husband is the head of the wife even as Christ is the head of the church, his body, and is himself its Saviour.
24 Now as the church submits to Christ, so also wives should submit in everything to their husbands.
And Paul teaches that Christ is the seed of Abraham to whom the promises were given.
Galatians 3:15-29 To give a human example, brethren: no one annuls even a man's will, or adds to it, once it has been ratified.
16 Now the promises were made to Abraham and to his offspring. It does not say, "And to offsprings," referring to many; but, referring to one, "And to your offspring," which is Christ.
17 This is what I mean: the law, which came four hundred and thirty years afterward, does not annul a covenant previously ratified by God, so as to make the promise void.
18 For if the inheritance is by the law, it is no longer by promise; but God gave it to Abraham by a promise.
19 Why then the law? It was added because of transgressions, till the offspring should come to whom the promise had been made; and it was ordained by angels through an intermediary.
20 Now an intermediary implies more than one; but God is one.
21 Is the law then against the promises of God? Certainly not; for if a law had been given which could make alive, then righteousness would indeed be by the law.
22 But the scripture consigned all things to sin, that what was promised to faith in Jesus Christ might be given to those who believe.
23 Now before faith came, we were confined under the law, kept under restraint until faith should be revealed.
24 So that the law was our custodian until Christ came, that we might be justified by faith.
25 But now that faith has come, we are no longer under a custodian;
26 for in Christ Jesus you are all sons of God, through faith.
27 For as many of you as were baptised into Christ have put on Christ.
28 There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you are all one in Christ Jesus.
29 And if you are Christ's, then you are Abraham's offspring, heirs according to promise.
This is theology, the story of God making himself heir of the promises so that God can make those in Christ - that is to say, the church - into heirs of the promises because by incorporation into Christ they become heirs with Christ and share in the divine nature through Christ.
This ought to be elementary teaching to any Christian. It ought not need to be reiterated here. It is "the milk of the word of God" not the meat, but it looks like it needs to be repeated again because some have decided to forget it and pretend that gentiles want to replace Jews as God's chosen people when the truth is that God's chosen is Jesus Christ and always was and always will be thus outside of Christ there is no salvation and without faith in Jesus Christ there is no hope and no promises. Christ is the yes and the amen of all God's promises.
2 Corinthians 1:18-22 As surely as God is faithful, our word to you has not been Yes and No.
19 For the Son of God, Jesus Christ, whom we preached among you, Silva'nus and Timothy and I, was not Yes and No; but in him it is always Yes.
20 For all the promises of God find their Yes in him. That is why we utter the Amen through him, to the glory of God.
21 But it is God who establishes us with you in Christ, and has commissioned us;
22 he has put his seal upon us and given us his Spirit in our hearts as a guarantee.
