An Application of Category of Fraternity to the Grass-roots Ecumenism on the Basis of Pope Francis’ Encyclical Letter Fratelli tutti

Although the encyclical of Pope Francis Fratelli tutti does not speak directly about ecumenism, the category of fraternity developed in it can and should apply in the ecumenical movement, especially in the grassroots contacts of Christians from different Churches. Top-down ecumenism, i.e. doctrinal dialogues and meetings of Church leaders, by themselves – although necessary – are not able to bring about an effective reconciliation of Christians living in different Churches and Ecclesial Communities. The hermeneutical key proposed by Pope Francis in the form of the category of the fraternity has a wider application than ecumenical relations. The article examines the determinants of this category and its possible application to the ecumenical movement. An example of the successful application of the idea of ​​fraternity in the activities of the International Ecumenical Fellowship is also given.