Jimmy Akin at This Rock
Worth reading and very relevant is Nostra Aetate:
As the sacred synod searches into the mystery of the Church, it remembers the bond that spiritually ties the people of the New Covenant to Abraham's stock.
Thus the Church of Christ acknowledges that, according to God's saving design, the beginnings of her faith and her election are found already among the Patriarchs, Moses and the prophets. She professes that all who believe in Christ-Abraham's sons according to faith (6)-are included in the same Patriarch's call, and likewise that the salvation of the Church is mysteriously foreshadowed by the chosen people's exodus from the land of bondage. The Church, therefore, cannot forget that she received the revelation of the Old Testament through the people with whom God in His inexpressible mercy concluded the Ancient Covenant. Nor can she forget that she draws sustenance from the root of that well-cultivated olive tree onto which have been grafted the wild shoots, the Gentiles.(7) Indeed, the Church believes that by His cross Christ, Our Peace, reconciled Jews and Gentiles. making both one in Himself.(8)
The Church keeps ever in mind the words of the Apostle about his kinsmen: "theirs is the sonship and the glory and the covenants and the law and the worship and the promises; theirs are the fathers and from them is the Christ according to the flesh" (Rom. 9:4-5), the Son of the Virgin Mary. She also recalls that the Apostles, the Church's main-stay and pillars, as well as most of the early disciples who proclaimed Christ's Gospel to the world, sprang from the Jewish people.