InPrincipio
InPrincipio Podcast
Books, readings, and historical studies with a Catholic perspective
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InPrincipio
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Latest episode
Jul 10, 2026
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Episodes
Pope St. Pius I (July 11) — From Dom Guéranger’s Liturgical Year 10.07.2026 6:17
A meditation for the Feast of Pope St. Pius I, from Dom Guéranger’s “The Liturgical Year”, Volume IV of the Time after Pentecost. Pope Saint Pius I, who governed the Church during the mid-second century (traditionally from about A.D. 140 to 155), shepherded the faithful through an era of both external persecution and internal doctrinal challenges. According to ancient tradition, he was the brother...
The Seven Holy Brothers and Sts. Rufina and Secunda (July 10) — From Dom Guéranger’s Liturgical Year 09.07.2026 18:29
A meditation for the Feast of the Seven Holy Brothers, Martyrs, and Saints Rufina and Secunda, from Dom Guéranger’s “The Liturgical Year”, Volume IV of the Time after Pentecost. The Seven Holy Brothers were seven Christian brothers, traditionally regarded as the sons of the noble widow Saint Felicitas of Rome, who suffered martyrdom during the persecution of the emperor Marcus Aurelius. Refusing e...
Practice for the Time after Pentecost — From Dom Guéranger’s Liturgical Year 08.07.2026 8:13
Chapter III of the Introduction to the Time after Pentecost: Practice for the Time after Pentecost, from Dom Guéranger’s “The Liturgical Year” Volume X, Book I of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent...
St. Elizabeth of Portugal (July 8) — From Dom Guéranger’s Liturgical Year 07.07.2026 15:13
A meditation for the Feast of Saint Elizabeth, Queen of Portugal, from Dom Guéranger’s “The Liturgical Year”, Volume IV of the Time after Pentecost. Saint Elizabeth of Portugal, also known as Elizabeth of Aragon, was a queen renowned for her deep piety, boundless charity, and tireless work as a peacemaker. Married to King Denis of Portugal, she endured many trials with patience, including her husb...
Saints Cyril and Methodius (July 7) — From Dom Guéranger’s Liturgical Year 06.07.2026 21:01
A meditation for the Feast of Saints Cyril and Methodius, Apostles of the Slavs, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Saints Cyril and Methodius were ninth-century brothers from Thessalonica who devoted their lives to bringing the Gospel to the Slavic peoples. Saint Cyril (originally Constantine), a brilliant scholar, and Saint Methodius, a capable ad...
The Octave of Saints Peter and Paul (July 6) — From Dom Guéranger’s Liturgical Year 05.07.2026 21:05
A meditation for the Octave Day of the Feast of Saints Peter and Paul, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus...
Sixth Sunday after Pentecost — From Dom Guéranger’s Liturgical Year 04.07.2026 40:30
A meditation for the Sixth Sunday after Pentecost, from Dom Guéranger’s “The Liturgical Year”, Volume II of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining readi...
Sixth day within the Octave of Saints Peter and Paul (July 4) — From Dom Guéranger’s Liturgical Year 03.07.2026 12:04
A meditation for the Sixth Day within the Octave of the Feast of Saints Peter and Paul, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet bee...
Pope St. Leo II (July 3) — From Dom Guéranger’s Liturgical Year 02.07.2026 21:51
A meditation for the Feast of Pope Saint Leo II, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Pope Saint Leo II was pope from 682 to 683 and is remembered as a learned and charitable pontiff who helped strengthen the unity of the Church during a period of controversy. Born in Sicily, he was known for his knowledge of Scripture, Greek, Latin, and sacred music,...
The Visitation of the Blessed Virgin Mary (July 2) — From Dom Guéranger’s Liturgical Year 01.07.2026 53:15
A meditation for the Feast of the Visitation, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining readings...
The Most Precious Blood of Jesus (July 1) — From Dom Guéranger’s Liturgical Year 30.06.2026 34:40
A meditation for the Feast of the Most Precious Blood of our Lord Jesus Christ, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been comple...
Commemoration of St. Paul (June 30) — From Dom Guéranger’s Liturgical Year 29.06.2026 36:47
A meditation for the Commemoration of St. Paul, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining reading...
The Feast of Saints Peter and Paul (June 29) — From Dom Guéranger’s Liturgical Year 28.06.2026 1:33:53
A meditation for the Feast of Saints Peter and Paul, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining re...
Fifth Sunday after Pentecost — From Dom Guéranger’s Liturgical Year 27.06.2026 34:17
A meditation for the Fifth Sunday after Pentecost, from Dom Guéranger’s “The Liturgical Year”, Volume II of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining readi...
The Nativity of St. John the Baptist (June 24) — From Dom Guéranger’s Liturgical Year 24.06.2026 1:25:53
A meditation for the Feast of the Nativity of St. John the Baptist, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, t...
Vigil of St. John the Baptist — From Dom Guéranger’s Liturgical Year 22.06.2026 10:34
A meditation for the Vigil of St. John the Baptist, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining rea...
St. Alban (June 22) — From Dom Guéranger’s Liturgical Year 22.06.2026 15:42
A meditation for the Feast of Saint Alban, Proto-Martyr of England, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Saint Alban was the first recorded Christian martyr of Britain and is believed to have suffered persecution during the Roman period, traditionally under the emperor Diocletian in the early fourth century. According to the account of Saint Bede the...
Fourth Sunday after Pentecost — From Dom Guéranger’s Liturgical Year 21.06.2026 31:34
A meditation for the Fourth Sunday after Pentecost, from Dom Guéranger’s “The Liturgical Year”, Volume II of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the remaining read...
The Mystery of the Time after Pentecost — From Dom Guéranger’s Liturgical Year 19.06.2026 11:28
Chapter II of the Introduction to the Time after Pentecost: the Mystery of the Time after Pentecost, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) ha...
St. Juliana Falconieri (June 19) — From Dom Guéranger’s Liturgical Year 18.06.2026 19:46
A meditation for the Feast of Saint Juliana Falconieri, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Juliana Falconieri (1270–1341) was an Italian religious foundress and the niece of Alexis Falconieri, one of the seven founders of the Order of the Servants of Mary (Servites). From childhood she had a deep devotion to the Blessed Virgin Mary and desired a lif...
St. Ephrem the Syrian (June 18) — From Dom Guéranger’s Liturgical Year 17.06.2026 32:36
A meditation for the Feast of Saint Ephrem the Syrian, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Saint Ephrem the Syrian (c. 306–373) was a great Syriac Christian writer, theologian, poet, and Doctor of the Church known as the “Harp of the Holy Spirit” because of his profound hymns and spiritual poetry. Born in Nisibis and later living in Edessa, he served...
The History of the Time after Pentecost — From Dom Guéranger’s Liturgical Year 16.06.2026 8:16
Preface and Chapter 1 of the Introduction to the Time after Pentecost: the History of the Time after Pentecost, from Dom Guéranger’s “The Liturgical Year”, Volume II of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to...
Saints Cyr (Cyricus) and Julitta (June 16) — From Dom Guéranger’s Liturgical Year 15.06.2026 22:13
A meditation for the Feast of Saints Cyr (also known as Cyricus) and Julitta, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Saints Cyricus and Julitta were a mother and son who suffered martyrdom during the persecutions of the Roman Empire, traditionally placed during the reign of Diocletian in the early 4th century. Julitta, a noble Christian woman from Iconi...
Saints Vitus, Modestus, and Crescentia (June 15) — From Dom Guéranger’s Liturgical Year 15.06.2026 9:59
A meditation for the Feast of Saints Vitus, Modestus, and Crescentius, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus...
St. Basil the Great (June 14) — From Dom Guéranger’s Liturgical Year 14.06.2026 40:38
A meditation for Feast of Saint Basil the Great of Caesarea, from Dom Guéranger’s “The Liturgical Year”, Volume III of the Time after Pentecost. Please note that Servant of God Dom Prosper Guéranger went to his eternal reward in 1875; at this point, Volumes I-IX (Advent to Pentecost Saturday) had been completed, but Volumes X-XV (Trinity Sunday to Advent) had not yet been completed. Thus, the rema...
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