16 Great indeed and beyond the strength of man are these objects of our hopes and prayers, venerable brothers; but, since God has "made the nations of the earth for health,"(11) when He founded the Church for the welfare of the peoples, and promised that He will abide with her by His assistance to the end of the world, We firmly trust that, through your endeavors, the human race, taking warning from so many evils and visitations, will submit themselves at length to the Church, and turn for health and prosperity to the infallible guidance of this apostolic see.
Source: Inscrutabili Dei Consilio (Vatican.va)