10 However, long and difficult negotiations were necessary before they could give effect to this praiseworthy determination. A new declaration of the same kind was first issued in the name of all the bishops on 22nd June 1595, and at length towards the end of September such progress had been made that Cyril Terletski, bishop of Lutsk, and Hypatius Pociei, bishop of Vladimir were able to set out for Rome as representatives of all the rest of the bishops. They took with them on this journey a document setting out the conditions on which all the Ruthenian bishops were ready to embrace the unity of the Church. Our predecessor Clement VIII received them very benevolently and committed the document they had brought to a committee of cardinals for careful examination and approval. Discussions of the whole matter began at once and finally reached the desired happy result. On 23rd December 1595 the emissaries were admitted to the presence of the supreme pontiff; they read the declaration of all the bishops before the illustrious assembly and then in their own name and that of the other bishops made a solemn profession of faith and promised due obedience and respect.
Source: Orientales Omnes Ecclesias (Vatican.va)