17 For this reason, We thank God for giving Us this suitable occasion to thank the Slavic people and to effect a common benefit for them. Indeed We do this no less eagerly than Our predecessors. Certainly We foresee and desire that the Slavic nation should learn from the great abundance of bishops and priests. May they be strengthened in the profession of the true faith, in true obedience to the Church of Jesus Christ. May they understand more each day how great a force of good comes from the customs of the Catholic Church in family life and in all the orders of government. Certainly those churches vindicate the many great cares We showed toward them. There is nothing We desire more than to take the appropriate measures for their comfort and prosperity and to have all their relations with Us be in perpetual harmony. This is the greatest and the best bond of safety. It remains that God, who is rich in mercy, might look upon Our plans and favor what We have begun. Meanwhile, We have Cyril and Methodius, the teachers of Slovenia, as intercessors with Him. As We wish to promote their veneration, so We trust in their future heavenly patronage.
Source: Grande Munus (Vatican.va)