All Christians are Zionists, by definition.
You obviously haven't read the New Testament.
For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes, to the Jew first and also to the Greek.
- Romans 1:16
There will be tribulation and distress for every soul of man who does evil, of the Jew first and also of the Greek, but glory and honor and peace to everyone who does good, to the Jew first and also to the Greek. For there is no partiality with God.
- Romans 2:9-11
Then what advantage has the Jew? Or what is the benefit of circumcision? Great in every respect. First of all, that they were entrusted with the oracles of God. What then? If some did not believe, their unbelief will not nullify the faithfulness of God, will it? May it never be! Rather, let God be found true, though every man be found a liar, as it is written, “That you may be justified in your words, and prevail when you are judged.”
- Romans 3:1-4
I am telling the truth in Christ, I am not lying, my conscience testifies with me in the holy spirit, that I have great sorrow and unceasing grief in my heart. For I could wish that I myself were accursed, separated from Christ for the sake of my brethren, my kinsmen according to the flesh, who are Israelites, to whom belongs the adoption as sons, and the glory and the covenants and the giving of the Torah and the temple service and the promises, whose are the fathers, and from whom is the Christ according to the flesh, who is over all, God blessed forever. Amen.
- Romans 9:1-5
I say then, God has not rejected his people, has he? May it never be! For I too am an Israelite, a descendant of Abraham, of the tribe of Benjamin. God has not rejected his people whom he foreknew.
- Romans 11:1-2
But if some of the branches were broken off, and you, being a wild olive, were grafted in among them and became partaker with them of the rich root of the olive tree, do not be arrogant toward the branches; but if you are arrogant, remember that it is not you who supports the root, but the root supports you. You will say then, “Branches were broken off so that I might be grafted in.” Quite right, they were broken off for their unbelief, but you stand by your faith. Do not be conceited, but fear; for if God did not spare the natural branches, he will not spare you, either. Behold then the kindness and severity of God; to those who fell, severity, but to you, God’s kindness, if you continue in his kindness; otherwise you also will be cut off. And they also, if they do not continue in their unbelief, will be grafted in, for God is able to graft them in again. For if you were cut off from what is by nature a wild olive tree, and were grafted contrary to nature into a cultivated olive tree, how much more will these who are the natural branches be grafted into their own olive tree?
- Romans 11:17-24
For I say that Christ has become a servant to the circumcision on behalf of the truth of God to confirm the promises given to the fathers, and for the Gentiles to glorify God for his mercy; as it is written, “Therefore I will give praise to you among the Gentiles, and I will sing to your name.” Again he says, “Rejoice, O Gentiles, with his people.” And again, “Praise the Lord all you Gentiles, and let all the peoples praise him.” Again Isaiah says, “There shall come the root of Jesse, and he who arises to rule over the Gentiles, in him shall the Gentiles hope.”
- Romans 15:8-12