Pope Gregory III vehemently disagreed.[75] A new Empress Irene siding with the pope, called for an Ecumenical Council. In 787, the fathers of the Second Council of Nicaea "warmly received the papal delegates and his message".[76] At the conclusion, 300 bishops, who were led by the representatives of Pope Hadrian I[77] "adopted the Pope's teaching",[76] in favor of icons.