What you are saying started with Calvin in the 1500's. Replacement Theology where the Church replaces Israel is never taught in the Bible. 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. 

Rom 11:1  I say then, Hath God cast away his people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin.  Rom 11:2  God hath not cast away his people which he foreknew. Wot ye not what the scripture saith of Elias? how he maketh intercession to God against Israel, saying,  Rom 11:3  Lord, they have killed thy prophets, and digged down thine altars; and I am left alone, and they seek my life.  Rom 11:4  But what saith the answer of God unto him? I have reserved to myself seven thousand men, who have not bowed the knee to the image of Baal. 

Rom 11:11  I say then, Have they stumbled that they should fall? God forbid: but rather through their fall salvation is come unto the Gentiles, for to provoke them to jealousy. 

You can look up Replacement Theology on the web and see it's origins. God made a solemn promise to Abraham, Issac and Jacob and because He could swear by no greater, He swore by Himself. Israel has been blinded because they rejected Jesus as their King, thereby opening a way for the Gentiles to be grafted in. Israel is the root and we are grafted in. Israel's destiny is to go through the Tribulation. Rev. is the Book of the future. The Church is taken out before the Tribulation begins. The Church is not mentioned after Chapter 5 in the Book. The Church is taken out, and then the Man of Sin is revealed. Israel will look at his as the true Messiah because he will bring them peace, establishing a 7 year peace plan with them only to break it is the middle of the week. A lot of false teachings have come about including Amillennilalism.