More serious was the effect upon the Jews of the spirit awakened at Vienne. That council, besides enacting very severe laws against usury, denounced the privilege accorded in Spain to Jews, whereby Jewish witnesses were requisite for the conviction of Jewish defendants. It did not presume to annul this privilege, but forbade all intercourse between the races wherever it was in force.[216] The Spanish prelates, in returning from the council in 1312, brought with them these canons and the spirit of intolerance that dictated them and made haste to give expression to it at the council of Zamora, in January, 1313, in a number of canons, the temper of which is so different from the previous utterances of the Spanish Church that it shows the revolution wrought in their mode of thinking by intercourse with their brethren from other lands. Henceforth, in this respect, the Spanish Church emerges from its isolation and distinguishes itself by even greater ferocity than that which disgraced the rest of Christendom. The fathers of Zamora invoked the curse of God and of St. Peter on all who should endeavor to enforce the existing laws requiring the evidence of Jews to convict Jews. They denounced the Jews as serpents, who were only to be endured by Christians because they were human beings, but were to be kept in strict subjection and servitude, and they sought to reduce this principle to practice by a series of canons restricting the Jews in every way and putting an end to all social intercourse between them and Christians.[217] The friendly mingling of the races, which shows how little the prejudices of the churchmen were shared by the people at this period, became a favorite subject of objurgation and required a long series of efforts to eradicate, but the Church triumphed at last, and the seeds of envy, hatred and all uncharitableness, which it so assiduously planted and cultivated, yielded in the end an abundant harvest of evil. What prepossessions of Christian kindness the prelates of Zamora felt that they had to overcome are indicated in the final command that these constitutions should be read publicly in all churches annually, and that the bishops should compel by excommunication all secular magistrates to enforce them.[218]