Among the most active of the major Curial institutions are the Congregation for the Doctrine of the Faith , which oversees church doctrine ; the Congregation for Bishops , which coordinates the appointment of bishops worldwide ; the Congregation for the Evangelization of Peoples , which oversees all missionary activities ; and the Pontifical Council for Justice and Peace , which deals with international peace and social issues . Among the most active of the major Curial institutions are the Congregation for the Doctrine of the Faith , which oversees the Catholic Church 's doctrine ; the Congregation for Bishops , which coordinates the appointment of bishops worldwide ; the Congregation for the Evangelization of Peoples , which oversees all missionary activities ; and the Pontifical Council for Justice and Peace , which deals with international peace and social issues .