Bishops' Conferences from all over the world soon voted to expand the use of the vernacular, and requested confirmation of this choice from Rome. In response, from 1964 onwards, a series of documents from Rome granted general authorization for steadily greater proportions of the Mass to be said in the vernacular. By the time the revised Missal was published in 1970, priests were no longer obliged to use Latin in any part of the Mass. Today, a very large majority of Masses are celebrated in the language of the people, though Latin is still used either occasionally or, in some places, on a regular basis. The rule on the language to be used is as follows: "Mass is celebrated either in Latin or in another language, provided that liturgical texts are used which have been approved according to the norm of law. Except in the case of celebrations of the Mass that are scheduled by the ecclesiastical authorities to take place in the language of the people, priests are always and everywhere permitted to celebrate Mass in Latin." ("Redemptionis Sacramentum", 112)