Early Middle Ages 's 598 Bull wrote of a duty of Christians to protect Jews, which became official Church doctrine. Contrary to the Church in the Eastern Roman Empire, which inherited the corpus of Hellenistic anti-semitism and where violent episodes and destruction of synagogues were more frequent, the Western Roman Church opted to tolerate and protect Jews. This was brought into Church teaching under Pope
Gregory the Great (c. 540–604) at the end of the sixth century based on the theological theories of Paul and Augustine and existing Roman Law. The bull explained that similar to as Jews were not allowed to pursue more freedoms than Roman law allowed their position, so Christians were not allowed to infringe the rights that Jews had. The bull, which started with the phrase "
Sicut Judaeis", was later known as "Constitutio pro Judaeis" and was re-issued by later popes in response to persecutions and appeals from Jews for protection. Thus, though a "persecuting spirit" often existed among the general population through the Middle Ages, Jews enjoyed a level of protection in law from the papacy. In
Gregory's correspondence with other bishops, he urged them to ensure that Jews were treated justly and granted their legal rights, urged them to not interfere with Judaic internal affairs and allow them to celebrate their feasts freely and in some cases to return to them synagogues that had been confiscated. At the same time, Gregory insisted - in line with the Theodosian code - that the activities of Jews in Christian society must remain limited and he was specifically adamant about Jewish ownership of Christian slaves, which he considered an insult to Christ. He also opposed
Judaising tendencies and his sermons drew on traditional images of Jews as dark, blind and stubborn unbelievers. Gregory was also keen on winning over Jews to Christianity and encouraged his bishops to work tirelessly for that goal. Most importantly, Pope Gregory insisted that Jews should not be forced to convert or physically harmed. One of his letters on conversion was deemed by later canonists so important that it was included in Gratian's
Concordia discordantium canonum which became a fundamental work for both canon lawyers and Decretalists (those who commented on twelfth and thirteenth-century papal decrees. While Gregory's teaching was kept until the later Middle Ages, there was one exception when the Visigothic king
Sisebut and his successors ordered Jews for political reasons to be converted by force shortly after Gregory's ruling. Though this was radically opposed to Christian tradition, the Spanish Church ratified the validity of the forced conversions at the
Synod of Toledo in 694. Pope Innocent III in 1201 also argued that in some cases, even if force had been used in baptisms, they were nonetheless valid and the person would need to remain a Christian. Papal interest in Jews should, however, not be overstated as and there was no overarching, let alone denigrading papal policy towards the Jews that all popes during the High Middle Ages pursued. By the thirteenth century, Augustine's witness theory had eroded significantly so that the Jews were increasingly deemed not worth the proposed toleration. Several economic, political, but also theological reasons have been cited. Firstly, disappearance of pagans and the ascent of Islam are said to have decreased the uniqueness of Jews in the Christian West. Secondly, the rise of rationalism in Christian theology is said to have made the Jewish refusal to convert seem irrational - and even inhuman - given the proposed arguments. Though according to the Augustinian tradition the Jews were considered blind to the truth of Christianity, some Christians, based on their reading of certain Bible passages, believed that Jews had killed Jesus knowing that he was the Messiah. This fuelled the popular belief that those who had spilled God's blood knowingly would engage in
ritual murder, a charge that began being levelled against Jews from the mid-twelfth century onwards and which often resulted in a reissuance of
Sicut Judaeis. At the same time, rabbinic literature and the Talmud became increasingly known in the West, which called into question the loyalty of Jews to the Old Testament as described by Augustine while also often being perceived as a hindrance in converting Jews. Finally, the growth of the Dominican and Franciscan orders, who were charged with ensuring orthodoxy of faith, is said to have spread a theology that did not allow Jewish presence in Latin Christendom. These developments resulted also in the first expulsions of Jews from Christian kingdoms (France in 1182, England in 1280), often justified by the claim to protect Christian societ from the bad influence of Jews. Jews had been often perceived as subversive elements in the social order and the Church was not entirely wrong when it identified Jewish influences in heretic movements such as the Albigensians or the later Hussites. Some heretics discussed scriptural texts with learned Jews, who also lent them their books. Though the Dominicans and Franciscans, especially their founders, were initially not hostile towards the Jews and at first even tried to discourage the charges of ritual murder, they increasingly held the view that Augustine's teaching was no longer tenable, that the Jewish protective rights should be limited and that the Jews should be converted.
Pope Gregory IX also gave them the task to inspect all Jewish books in France for alleged heresies and blasphemies, as certain Jewish converts to Christianity had brought to attention that medieval Judaism placed a stronger focus of its study and laws on the Talmud and not, like first century Judaism, on the Old Testament. In particular, the Talmud was considered especially dangerous as it was believed to contain blasphemies, hinder Jewish conversion, and rival the unique authority of the Old Testament while also encouraging Jews to ignore it completely This also led to the
Disputation of Paris in 1240, the first of many debates in which Christian scholars, often represented by Jewish converts with knowledge of the Jewish writings, tried to convince Jewish scholars of the truth of Christianity or interrogate them about blasphemies contained in rabbinical writings. The leading disputant on the Christian side, the excommunicated Jew and Christian convert
Nicholas Donin, convinced the commission presiding over the disputation to rule against the Talmud and thus for the first time, the Talmud was burned in 1242 in Paris. This position was revised a few years later by
pope Innocent IV in response to petitions by Jewish rabbis from France who insisted that without the Talmud they could not make sense of their Bibles. Thereafter, the Talmud was more subject to censorship than destruction, though later popes varied between censoring and completely banning the book. The Spanish Dominican
Ramon Martí translated parts of the Talmud into Latin and soon Christian scholars also sought to use the Talmud in their attacks against Judaism and to convert Jews by proving Christian truths from within it.
Late Middle Ages The "
Black Death"
pandemic swept through Asia and the Middle East and into Europe between 1347 and 1350, and is believed to have killed between a quarter and half of
Europe's population. Popular opinion blamed the Jews for the plague, and
violence directed at them erupted throughout the continent. In defence of the Jews,
Pope Clement VI issued two
papal bulls in 1348 (6 July and 26 September), the latter named
Quamvis Perfidiam, which condemned the violence and said those who blamed the plague on the Jews had been "seduced by that liar, the Devil." He went on to emphasise that the Jews were suffering just as badly as everyone else. He urged clergy to take action to protect Jews and offered them papal protection in the city of
Avignon. Though also Christian rulers issued similar statements, this led to the biggest wave in anti-semitic violence since the Rhineland massacres. The period was also characterised by renewed expulsions in France and parts of Germany, which were often accompanied by forced conversions. These conversions did not solve the perception of Christians that Jews were contaminating Christian society and especially in Iberia, where after the massacres of 1391 tens of thousands of Jews converted either forcibly or out of fear, the
new Christians (or
conversos) were perceived as a hidden danger as they were now, at least superficially, indistinguishable from other Christians. The Spanish population suspected them, as conversion gave Jews same rights, of being an economic threat or of still practising Judaism and thus being hypocrites and hidden subversives. This led to the
Spanish Cortes passing discriminatory laws against new Christians and the creation of the
Spanish Inquisition (again under participation of the Dominicans), which sought to distinguish between true Christians and impostors and punish those Jews that had secretly reverted to Judaism. Though
Pope Sixtus IV had initially approved the inquisition in a bull in 1478, four years later he complained to the Spanish king and asked him to establish certain rules to safeguard the rights for a fair trial of the accused such as excluding enemies acting as witnesses or allow repentant accused to confess and receive absolution instead of facing trial. He was rejected and in 1492 Jews were given the choice of either baptism or expulsion, as a result more than 160,000 Jews were expelled. Thus, by the end of the fifteenth century, only few places with Jews remained in Western Europe, including the Papal States which also took in some of the expelled Jews. With the deterioration of the conditions of Jewish communities in Europe a more extensive body of Jewish anti-Christian polemics developed that, written in Hebrew, was intended to arm them against their spiritual adversaries and help them resist the temptation to convert. For that, Jews also engaged more with the Gospels, Christian doctrine and Christian biblical commentary in order to refute arguments aimed at their core beliefs. ==Early Modern Period==