“When the gospel of Christ was first proclaimed, the Jews had priority. We see this prioritization in Paul’s first missionary journey. Every time they would come to a new city, Paul and Barnabas would preach in the synagogue to the Jews in that city.” 

“For I am not ashamed of the gospel of Christ, for it is the power of God to salvation for everyone who believes, for the Jew first and also for the Greek.” ‭‭Romans‬ ‭1‬:‭16‬ 

“who are Israelites, to whom pertain the adoption, the glory, the covenants, the giving of the law, the service of God, and the promises; of whom are the fathers and from whom, according to the flesh, Christ came, who is over all, the eternally blessed God. Amen.”
‭‭Romans‬ ‭9‬:‭4‬-‭5‬

““For you are a holy people to the Lord your God; the Lord your God has chosen you to be a people for Himself, a special treasure above all the peoples on the face of the earth. The Lord did not set His love on you nor choose you because you were more in number than any other people, for you were the least of all peoples; but because the Lord loves you, and because He would keep the oath which He swore to your fathers, the Lord has brought you out with a mighty hand, and redeemed you from the house of bondage, from the hand of Pharaoh king of Egypt.”
‭‭Deuteronomy‬ ‭7‬:‭6‬-‭8‬