Replacement Theology essentially claims that the Jewish people were the chosen people of God and that due to their rejection of the Christ they have been replaced as God’s chosen people by the Church. This replacement is then taken to mean that the Jewish people have been rejected or “accursed” by God for their rejection of the Gospel.
In Nostra Aetate the Church explicitly rejects replacement theology:
Nevertheless, God holds the Jews most dear for the sake of their Fathers; He does not repent of the gifts He makes or of the calls He issues. . . (4)
The Church rejects the idea that the covenant with Israel has been nullified or revoked.
The Old Testament is an indispensable part of Sacred Scripture. Its books are divinely inspired and retain a permanent value, for the Old Covenant has never been revoked. (Catechism, 121)
While the role of preparing the world for the arrival of the messiah has been fulfilled by the Jewish people, they still are God’s chosen people whose fidelity to God remains a light to the nations. The Jewish people were called to a unique and special relationship to God that included preparing for the messiah but was not limited to that one role.
The Church is the expanded Israel - grafted into the family of God.
There is no separate gospel for Jews and for gentiles as the false dispensationalists believe.
As to supersessionism — in Catholic theology the Church was never understood as depriving Israel of any place in God’s plan.
The New Testament makes it clear that Christ’s sacrifice on the cross has made the temple sacrifices obsolete, and the Eucharist has taken their place as an ongoing rite.
The Church is Israel, Israel is the Church...This Guy is wondering, What is the issue here? How hard is it for people to grasp the concept of continuity? Supersession, replacement...are these terms really necessary?
When a train arrives at the station, you can get on, stay on, or get off. The train then leaves the station. It’s the same bloody train!
Peter and Paul were notoriously available for consultation. The ministry of Christ, watched in real time! His life, that ministry, reasonably well chronicled. Yes, a transition took place, but it’s not as if the bulk of the Jews then living were forced to make a snap decision.
Holy Mother Church need not apologize.