As ITL noted, Ezekiel 36 is a passage of Scripture with promises directly given to the nation of Israel.
For example,
Ezekiel 36:28 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.
This is yet unfulfilled, but someday will be fulfilled, literally. The great hermeneutical mistake of some here is to deny the existence of Israel, or to teach a form of Replacement Theology, which among orthodox Christianity is a known heresy. The RCC believes that she has replaced Israel. This is a Catholic doctrine.
In salvation when a Jew becomes saved he leaves his false religion and becomes a Christian, a part of the bride of Christ, whom Christ will come for. When a Gentile is saved he leaves his paganism and becomes a Christian and becomes a part of the bride Christ whom Christ will come from. Both Jew and Gentile: we are one in Christ. There is no difference any longer.
However Israel still exists. The Christian cannot claim to be Israel, or Israel's replacement, or Israel's extension. That is absolute error and nowhere taught in Scriptures.
Consider:
1Co 10:32 Give none offence, neither to the Jews, nor to the Gentiles, nor to the church of God:
--Paul delineates:
1. The Jews.
2. The Gentiles.
3. The church of God.
--The Jews and the Gentiles, as well as the church existed together side by side. The church had not replaced Israel, or had not become an extension of Israel by 55 A.D. when the epistle was written, or some 25 years after Pentecost had taken place.
Paul writes to the Romans:
Rom 9:3 For I could wish that myself were accursed from Christ for my brethren, my kinsmen according to the flesh:
Rom 9:4 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;
Rom 9:5 Whose are the fathers, and of whom as concerning the flesh Christ came, who is over all, God blessed for ever. Amen.
--His earnest desire, even to the extent that he himself could trade places with them spiritually, was that Israel should be saved. He defines Israel--those to whom the covenants and law were given. By those ones, of the flesh, by whom Christ came. It was this nation that Paul was praying for. He was very specific. He prays for their salvation.
--Either Paul was a lunatic, a madman, perhaps even a liar, or the nation of Israel still existed, and this some 30 years after Pentecost.
He says the same thing in chapter 10:
Rom 10:1 Brethren, my heart's desire and prayer to God for Israel is, that they might be saved.
Rom 10:2 For I bear them record that they have a zeal of God, but not according to knowledge.
Rom 10:3 For they being ignorant of God's righteousness, and going about to establish their own righteousness, have not submitted themselves unto the righteousness of God.
--He prays for the nation of Israel to be saved.
Either they existed or they didn't. If they didn't Paul is lying and is deceived.
This is evidence enough that the church did not replace Israel nor is it an extension of Israel.
1 Peter 2:9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light:
--At this time God is calling out a nation to himself. They may be Muslims, Jews, Gentiles, Hindus, etc. But once they trust Christ they leave their religion behind: Judaism, Islam, Hinduism, paganism, etc. and follow Christ. We are all one in Christ. We are that holy nation that Christ is calling out in this day and age.
Israel still exists. In 1948 the UN officially granted Israel nation status. She still exists as a nation and that cannot be denied. Ezekiel 36 contains promises for that nation. Christ will come for her.