Jesus Christ, our Deliverer

In Paul's 11th letter to the Romans, verses 1-2a, 11-12,  25-29, Paul asks the question: "[H]as God rejected his people? Of course not! For I too am a child of Israel, a descendant of Abraham, of the tribe of Benjamin. God has not rejected his people whom he foreknew."  Remember that Paul was a persecutor of the Christians, an unbeliever in Jesus Christ until his conversion. Paul acclaims that "through their transgression [the transgression of the Israelites and through his own transgression] salvation has come to the Gentiles [to all those not of the race of Israel, the Chosen People]."  Why has God allowed this? Paul believes that it is "so as to make them [us Gentiles] jealous. Now," Paul says,  if their transgression is enrichment for the world, and if their diminished number is enrichment for the Gentiles, how much more their full number?.... [A] hardening has come upon Israel in part," Paul instructs us,  "until the full number of the Gentiles comes in, and thus all Israel will be saved as it is written: The deliverer will will come out of Zion, he will turn away godlessness from Jacob;  and this is my covenant with them when I take away their sins."

And at every Mass, the priest holds up the consecrated Host, "the deliverer" whom Paul speaks about," and  proclaims: Behold the  Lamb of God, who takes away the sins of the world!"

I believe! What is your belief?