2 And We, as a newly ordained priest, then just empowered to recite "I will go in to the altar of God" ( Psalm xiii. 4), hailed the Encyclical Annum Sacrum with genuine approval, enthusiasm and delight as a message from heaven. We associated Ourselves in fervent admiration with the motives and aims which inspired and directed the truly providential action of a Pontiff so sure in his diagnosis of the open and hidden needs and sores of his day. It is only natural, then, that We should today feel profoundly grateful to Providence for having designed that the first year of Our Pontificate should be associated with a memory so precious and so dear of Our first year of priesthood, and that We should take the opportunity of paying homage to the King of kings and Lord of lords (I Timothy vi. 15; Apocalypse xix. 6) as a kind of Introit prayer to Our Pontificate, in the spirit of Our renowned predecessor and in the faithful accomplishment of his designs, and that, in fine, We should make of it the alpha and omega of Our aims, of Our hopes, of Our teaching, of Our activity, of Our patience and of Our sufferings, by consecrating them all to the spread of the Kingdom of Christ.
Source: Summi Pontificatus (Vatican.va)