V. Dóminus vobíscum.
R. Et cum spiritu tuo.
Deus, qui ad tuéndam cathólicam iidem beátum Petrum Confessórem tuum virtúte et doctrína roborásti: concéde propítius; ut eius exémplis et mónitis errántes ad salútem resipíscant, et fidéles in veritátis confessióne persevérent.
Per Dominum nostrum Iesum Christum, Filium tuum: qui tecum vivit et regnat in unitate Spiritus Sancti Deus, per omnia saecula saeculorum.
V. The Lord be with you.
R. And with thy spirit.
Let us pray.
O God, who didst give strength and learning to blessed Peter thy Confessor for the defence of the Catholic faith, mercifully grant, that by his example and teaching the erring may be saved and the faithful remain constant in the confession of truth
Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end.
From the Office of Matins:
Petrus Canísius, Noviomagi in Gélria natus, statim ac Societáti Iesu nomen déderat, cathólicam fidem contra novatórum insídias, legatiónibus, sermónibus, scriptis libris defendéndam suscépit. Divínæ glóriæ amplificándæ únice inténtus, dici vix potest, quot per annos ámplius quadragínta labóres ærumnásque pertúlerit. Semel atque íterum Concílio Tridentíno intérfuit, Germániæ regiónes bene multas peragrávit, omne hóminum genus salubérrimus instítuis públice et privátim excóluit, complurésque urbes atque províncias vel ab hæréseos contagióne deféndit vel hæresi inféctas cathólicæ fídei restítuit. A sancto Ignátio Germániæ Superióris provínciæ præféctus, domos et collégia multis locis cóndidit. Contra Centuriatóres Magdeburgénses duo egrégia volúmina conscrípsit, et summam doctrínæ christiánæ theologórum iudício et longo populórum usu probátíssimam alíaque complúra in vulgus édidit; dignus proínde qui hæreticórum málleus et alter Germániæ apóstolus vocarétur. Dénique Fribúrgi Helvetiórum, séptimum supra septuagésimum annum agens, die vicésima prima Decémbris anno millésimo quingentésimo nonagésimo séptimo quiévit in Dómino. Eum Pius Papa undécimus Sanctórum fastis adiúnxit et simul universális Ecclésiæ Doctórem declarávit.
Peter Canisius was born at Nimwegen in the Netherlands. After joining the Society of Jesus, he began at once to defend the Catholic faith against the wiles of the innovators by missions, sermons, and writing books. His one idea was to promote the greater glory of God and it would be impossible to relate how many labours and hardships he went through for more than forty years. He took part more than once in the Council of Trent, travelled on successful missions through many parts of Germany, instructed all classes of society with sound teaching, both public and private, and defended many cities and provinces against the contagion of heresy or brought back to the Catholic faith those tainted by heresy. He was made head of the province of Germany by St. Ignatius, and built houses and colleges in many places. Against the Centuriators of Magdeburg, he wrote two famous volumes, and brought out a summary of Christian doctrine highly approved both by the judgment of theologians and by its long continued use among the people, and many other works in the mother-tongue. From all this, he earned the title of Hammer of the Heretics and second Apostle of Germany. Finally, at Fribourg in Switzerland, at the age of seventy-seven, he rested in the Lord on the 21st day of December, 1597. Pius XI added him to the list of the Saints and at the same time proclaimed him a Doctor of the Universal Church.