42 Besides, there is involved another right of the Church equally inviolable - the right to fulfil the imperative Divine Commission entrusted to her by her Divine Founder, to bring to souls, to bring to every soul, and the treasures of truth and of good, doctrinal and practical, which He Himself brought to the world. "Going therefore teach ye all nations . . . teaching them to observe all things whatsoever I have commanded you" ( Matthew xxviii, 19, 20).
Source: Non Abbiamo Bisogno (Vatican.va)