The Work of St. Peter the Apostle promotes, in Christian communities, the awareness of the need to develop the local clergy and consecrated life in recently founded missionary churches. It animates and coordinates missionary collaboration in all the local churches, through the offer of prayer, sacrifices and money, to support the formation of future priests and religious of the young churches, and the necessary preparation of their formators. The Work of St. Peter the Apostle was born in France (1889) at the suggestion of Mons. Cousin, Apostolic Vicar of Nagazaki, Japan. Mgr. Cousin, missionary bishop, wanted to train indigenous priests, capable of proclaiming the Gospel and making the Church grow in the midst of their own people. For this, it was necessary to build and support seminaries in the ‘mission lands’. To carry out this project, Bishop Cousin turned to Jeanne Bigard and her mother Stefanie, from a wealthy family from Normandy. Pope Leo XIII, with the Encyclical Letter Ad extremas Orientis, recommends the Work to the whole Church, and on May 3, 1922, Pius XI declared the Work of St. Peter the Apostle “Pontifical”, together with the other two precedents (Propagation of Faith and Missionary Childhood). “As can easily be seen, priestly and religious vocations blossom in the so-called mission countries as a sign and fruit of the vitality of faith and these regions are already transforming into missionary countries – underlined the Secretary General Fr Guy Bognon, PSS during the ‘General Assembly of the Pontifical Mission Societies of 2019 -. The formation of the young people called, whose number increases every year,