52 We appeal especially to all Catholic laymen everywhere who are distinguishing themselves in their professions and in public life to consider seriously how they can help their newly acquired brethren in the Faith, even without leaving their countries. They can do this by giving them the benefit of their advice, their experience, and their technical assistance; they can, without too much labor or grave inconvenience, sometimes give them help that will be decisive. Good men will surely find a way to fulfill this fatherly desire of Ours. They will make Our wish known to those whom they find favorably disposed, in order first to arouse good will, and then to channel it into the most suitable work.
Source: Princeps Pastorum (Vatican.va)