“Deus, qui hodiérnam diem Apostolórum tuórum Petri et Pauli martýrio consecrásti: da Ecclésiæ tuæ, eórum in ómnibus sequi præcéptum; per quos religiónis sumpsit exórdium. Per Dominum nostrum Iesum Christum, Filium tuum: qui tecum vivit et regnat in unitate Spiritus Sancti Deus, per omnia saecula saeculorum.”
“O God, Who made this day holy by the martyrdom of Your Apostle Peter and Paul, grant Your Church to follow in all things the teaching of those from whom she first received the faith.”
-collect of the Mass for the Feast of Saints Peter and Paul
Harvey Millican's Blog: Musings of a Trad Dad 