In the forefront of missionary work, both inside and outside the Church, catechists, evangelists, and missionaries are trained, dispatched, and supported to renew and rebuild the Church. Believing that the future of missions lies in training lay missionaries, continuous efforts have been made to foster Third Order members. These lay missionaries maintain close cooperation with the St. Luke Seok-du Hwang Foreign Missionary Society's Brotherhood and Sisterhood, aiming to flourish their charism for the common good through effective apostolic activities.