Angelo Roncalli was a 36 year old priest when in 1925 he was unexpectedly consecrated bishop and despatched as Pope Pius XI’s representative in Bulgaria, a largely Orthodox country, when Orthodox and Catholics had yet to learn to trust each other. Bulgaria was already feeling the influence of Soviet Russia. He wrote to priest friends during his pre-consecration retreat:
My mind is calm and my heart at peace … Yes, Obedientia et Pax, that is my episcopal motto. May it always remain so.
But you, my dear colleagues, have the duty to help me at this time by your prayers, especially on the Feast of Saint Joseph. [19 March, when his episcopal ordination was to take place.] Joseph, by the way, is my second name; I am happy to take it, but I would be happier still to take the virtues of that saint, for they form the fundamental qualities of a good representative of the Holy See.
From John XXIII by Leone Algisi, Catholic Book Club 1966, p58.