At the invitation of the duke of Bavaria, Theodo II., Rupert went to Regensburg (Ratisbon), where he began his apostolate.
The important T Lents of 1617 and 1618 at Grenoble were a prelude to a still more important apostolate in Paris, "the theatre of the world," as St Vincent de Paul calls it.
Once Paul's apostolate - a personal one, parallel with the more collective apostolate of " the Twelve " - has proved itself by tokens of Divine approval, Peter and his colleagues frankly recognize the distinction of the two missions, and are anxious only to arrange that the two shall not fall apart by religiously and morally incompatible usages (Acts xv.).
So the notion of formal or constitutional authority attaching to the apostolate, in its various senses, is an anachronism for the apostolic age.
Darazi, who had acted independently in his apostolate, was branded by Hamza as a heretic, and thus, by a curious anomaly, he is actually held in detestation by the very sect which perhaps bears his name.