That, in the Confusion which followed the rebellion of Sancho IV against his father, there may have arisen a desire to limit somewhat the privileges of Jew and Moor is rendered probable by the legislation of the Córtes of Valladolid, in 1293, to which allusion has already been made (p. 63), but the decisive impulse which aroused the Spanish Church from its indolent indifference and set it earnestly to work in exciting popular hatred and intolerance, would seem traceable to the council of Vienne in 1311-12. Among the published canons of the council, the only one relating to Moors is a complaint that those dwelling in Christian lands have their priests, called Zabazala, who, from the minarets of their mosques, at certain hours invoke Mahomet and sound his praises in a loud voice, and also that they are accustomed to gather around the grave of one whom they worship as a saint. These practices are denounced as unendurable, and the princes are ordered to suppress them, with the alternative of gaining salvation or of enduring punishment which shall make them serve as a terrifying example.[213] This threat fell upon deaf ears. In 1329 the council of Tarragona complains of its inobservance and orders all temporal lords to enforce it within two months, under pain of interdict and excommunication,[214] and a hundred years later the council of Tortosa, in 1429, supplicated the King of Aragon and all prelates and nobles, by the bowels of divine mercy, to enforce the canon and all other conciliar decrees for the exaltation of the faith and the humiliation of Jews and Moors, and to cause their observance by their subjects if they wish to escape the vengeance of God and of the Holy See. This was equally ineffectual, and it was reserved for Ferdinand and Isabella, about 1482, to enforce the canon of Vienne with a vigor which brought a remonstrance from the Grand Turk.[215] [Sidenote: _INFLUENCE OF THE CHURCH_]