The role of Jewish converts to Catholicism in changing traditional Catholic teachings on Jews
In a previous article, “Benzion Netanyahu: Jewish Activist and Intellectual Apologist,”  I discussed the activities of New Christian intellectuals in  15th-century Spain in developing an interpretation of Christianity and  Judaism in which Judaism was presented very positively:
	
		
			
			
				These intellectuals presented Jews as a genetically  separate religious group composed of morally superior individuals and  distinguished by a superior genetic heritage. On this basis, the New  Christians argued that they were therefore worthy of being the  progenitors of Christ who was born a Jew. (This appeals to Christians  who naturally want to believe that Jesus came from a superior genetic  stock.)  The basic strategy was to realize that Christianity could serve  as a perfectly viable ideology in which Christian Jews could retain  their ethnic solidarity, but with a Christian religious veneer.
			
		
 
	 
 
What I didn’t point out was that some of the the main New Christian  apologists, such as Alonso de Cartagena (whose writings are discussed in  Chapter 7 of Separation and Its Discontents,  p. 210ff), were not only converts from Judaism but also held high  positions within the Catholic Church—obviously an ideal position from  which alter Christian theology about Judaism. They were quite  successful, at least temporarily:
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As has undoubtedly often been the case in other eras  (see, e.g., the discussion of the Dreyfus case in Chapter 6), the [New  Christian] apologists were intellectually far more sophisticated than  their opponents, and collectively they dominated the literature of the  period. … Their arguments, while necessarily departing from orthodox  Christian arguments in their defense of the Jews, are presented in a  highly literate, scholarly style that undoubtedly commanded respect from  an educated audience. They were highly skilled in developing the very  intricate, tortured arguments necessary to overcome the existing  anti-Jewish bias of Christian theology. The result of all this  intellectual activity was a stunning, if temporary, victory over the  Toledo rebels of 1449 … . The rebels were soon regarded by the public as  moral, religious, and political renegades; they were excommunicated by  the pope, and their leaders were imprisoned and executed. (p. 212)
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A new book by John Connelly, a professor  of history at the  University of California-Berkeley, shows a similar phenomenon in the  20th century: converted Jews were instrumental in creating the Vatican  II document 
Nostra Aetate which changed the historic position of the Catholic Church toward the Jews (“
Converts Who Changed the Church: Jewish-Born Clerics Helped Push Vatican II Reforms“).  As with their New Christian predecessors, the technique was to find  passages of Scripture that conformed to their ethnic interests in  raising the status of Judaism yet remaining within the intellectual  confines of Catholicism:
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Nostra Aetate confirmed that Christ, his mother and the  apostles were Jews, and that the church had its origin in the Old  Testament. It denied that the Jews may be held collectively responsible  for Jesus Christ’s death, and decried all forms of hatred, including  anti-Semitism. Citing the Letter of St. Paul to the Romans, Nostra  Aetate called the Jews “most beloved” by God. These words …  staged a  revolution in Catholic teaching.
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From the Jewish point of view, a revolution was highly desirable.  The article on Judaism in The Catholic Encyclopedia from 1910 — during the papacy of Pius X (who  is highly regarded by traditionalist Catholics)— is instructive.  Jews  in the time of Jesus are described as a “race” that rejected the call of  Jesus for repentance, showing no sorrow for sin, unfit for salvation  and rejecting the true kingdom of God in favor of earthly power:  “Jesus justly treated as vain the hopes of His Jewish contemporaries  that they should become masters of the world in the event of a conflict  with Rome.” These views, including the view that Jews are a “race” can  be traced back to Christian intellectuals such as Eusebius in the 4th  century (see here, p. 106).[After the resurrection of Jesus,] the Church … took the  independent attitude which it has maintained ever since. Conscious of  their Divine mission, its leaders boldly charged the Jewish rulers with  the death of Jesus, and freely “taught and preached Christ Jesus”,  disregarding the threats and injunctions of men whom they considered as  in mad revolt against God and His Christ (Acts 4). (Catholic Encyclopedia, 1910)
The article portrays Church laws against Jews, such as laws against  Jews having Christian slaves and forcing Jews to live in ghettos, as  necessary to protect the Christian faith. It accurately portrays the  Church in later centuries as at times protecting Jews against popular  anti-Jewish actions. However, it asserts that the causes of popular  anti-Semitism included real conflicts between Jews and non-Jews that are  not explained as being due to Christian religious ideology that the  Jews murdered God. In particular, the causes of anti-Semitism are  described as follows:
 
- The deep and wide racial difference between Jews  and Christians which was, moreover, emphasized by the ritual and  dietary laws of Talmudic Judaism;
- the mutual religious antipathy which prompted the Jewish masses to  look upon the Christians as idolaters, and the Christians to regard  the Jews as the murderersof the Divine Saviour of mankind, and  to believe readily the accusation of the use of Christian blood in the  celebration of the; Jewish Passover, the desecration of the Holy  Eucharist, etc.;
- the trade rivalry which caused Christians to accuse the Jews of  sharp practice, and to resent their clipping of the coinage,  their usury, etc.;
- the patriotic susceptibilities of the particular nations in the  midst of which the Jews have usually formed a foreign element, and to  the respective interests of which their devotion has not always been  beyond suspicion.
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 These ideas on the causes of popular anti-Semitism are pretty much the same as the ones I emphasize in my overview of historical anti-Semitism.
 As with the New Christian intellectuals of the 15th  century, the converted Jews who influenced Vatican II managed to attain  the intellectual high ground. Connelly:The problem was, they had possessed no language of their  own with which to break the silence. More than most academic  disciplines, theology is a complex thicket with each branch guarded by a  prickly coterie of experts. Those wanting to grasp the complexities of  the church’s relations to Jews had to study eschatology, soteriology,  patristics, Old and New Testament, and church history through all its  periods. The bishops thus found themselves relying on tiny groups of  experts who had cared enough to amass the unusual intellectual  qualifications for this task. … The thinkers who did the intellectual  work that prepared this revolution were overwhelmingly converts.
As is typical of Jewish intellectual movements, there was a great  deal of cooperation among the converts. During the 1930s, converts—the  most important of whom was Johannes Oesterreicher—opposed Catholic  theologians who argued that Jews were “racially damaged” (a belief quite  consistent with the views of The Catholic Encyclopedia mentioned above). Instead, they claimed that Jews “carried a special holiness.”
 Although the rise of National Socialism increased the urgency of such  movements among Jews, there was a similar attempt at the First Vatican  Council, in 1870.The brothers Lémann — Jews who had become Catholics and  priests — presented a draft declaration on relations between the church  and Jews, stating that Jews “are always very dear to God” because of  their fathers and because Christ has issued from them “according to the  flesh.”
A basic argument by the converts was to stress Christian  universalism: “In their opposition, they were simply holding their  church to its own universalism.”
 It’s fascinating that de Cartegena’s argument also boiled down to  holding the Church to its own universalism.  ”If you really believe in a  universalist Christianity where nothing matters except religious  belief, then you shouldn’t be upset if a subset of former Jews [i.e.,  the New Christians] continues to marry among themselves and retains its  ethnic coherence, as long as their beliefs are sincere” (see above link).
 Again we see the fundamental weakness of the ideology of Western  universalism when in competition with a group that rejects a similar  ethic.
 In conceptualizing the motivation of these Jewish converts, Connelly asks:What were the impulses behind their engagement after the  war? … In Oesterreicher we see an enduring solidarity with the community  that once was his, most immediately his family. In 1946 he pondered the  fate of his father, who had died of pneumonia in Theresienstad….  Intense love and longing for his Jewish father began opening  Oesterreicher’s mind to the possibility that Jews could be saved as  Jews.
Well, maybe. But Connelly doesn’t even attempt to make this argument  for the other converts, and in any case it’s impossible to discount a  lingering sense of ethnic solidarity that goes well beyond filial  affection. (Connelly also mentions a bizarre psychoanalytic argument in  Peter Gordon’s review in The New Republic.)
 From an evolutionary perspective, the Jews who over the centuries  have become priests and bishops while advancing Jewish interests are  examples of altruism on behalf of their ethnic group. By becoming  Catholic clergy they would typically forego marriage and family. But  their behavior as insiders in an institution that historically had been  generally negative toward Judaism shows that they may nevertheless  advance the interests of their ethnic group without personally  reproducing.
http://www.theoccidentalobserver.net...hings-on-jews/