Eli-of-Kittim
The idea that Jews & Christians are two different people of God who are saved through two different covenants is not in the New Testament. The notion of national Israel and the Church as the two distinct people of God contradicts New Testament theology. The only people of God in the New Testament are those who are in Christ. Christ's atoning death transcends nation, race, ethnicity, skin color, sexuality, gender, and social status. The idea that Christ's sacrifice is not good enough to save the Jews--or that the Jews don't need Christ--is a heresy.