68. In this connection the warning which We gave in Our Letter to Our beloved son Peter Cardinal Fumasoni Biondi, Prefect of the S. Congregation of Propaganda Fide, on August 9, 1950, We should like to inculcate once again in view of the new danger that now threatens: "Let all the faithful . . . continue in their determination to support the missions, multiplying their activities on their behalf, ceaselessly praying fervently to God for them, aiding missionaries and providing for their needs as far as they can.