Ubi Petrus

Ubi Petrus We seek to provide resources for Orthodox Christians to defend the Faith in terms of apologetics and Church history.

Premiering Saturday, Nov. 2nd:
10/25/2024

Premiering Saturday, Nov. 2nd:

Unless otherwise stated, all citations are taken from ANF and NPNF series edited by Schaff.Bradshaw, David. “What Does it Mean to be Contrary to Nature?”Maho...

The only way to make any sense of Judaism without the Temple is Orthodox Christianity. The best book I've read on the pu...
10/25/2024

The only way to make any sense of Judaism without the Temple is Orthodox Christianity. The best book I've read on the purpose of the Temple and its sacrificial system as well as how that ties to Christianity is this: https://www.amazon.com/Welcoming-Gifts-Sacrifice-Bible-Christian/dp/1955890161

The first 58 pages are relatively slow but are vital in establishing the paradigm from which Fr. Jeremy Davis then presents the evidence. His main sources in this, outside of the Bible, are the commentaries of St. Cyril of Alexandria and St. John Chrysostom's homilies and commentaries.

The word sacrifice conjures images of suffering, loss, and even martyrdom. But sacrifice as practiced in the Old Testament and throughout the ancient world was most often the occasion of joyous celebration - a way of drawing near to God and to the other members of the community. Welcoming Gifts e...

Full video airing this Saturday morning Oct. 12th.
10/11/2024

Full video airing this Saturday morning Oct. 12th.

Man, Ybarra just can't catch a breath can he

The third video we did on the history of Orthodox missions will be airing in full this Saturday morning and it's free to...
09/16/2024

The third video we did on the history of Orthodox missions will be airing in full this Saturday morning and it's free to the public.

Welcome to the third video we are doing in a series on the history of Orthodox missions in the second millennium. Our first can be found here: https://www.y...

October 12th, Erick Ybarra & I will debate the Vatican I Papacy in person and live on Pints With Aquinas. I'll reveal my...
09/11/2024

October 12th, Erick Ybarra & I will debate the Vatican I Papacy in person and live on Pints With Aquinas. I'll reveal my identity & the full debate will be public. The debate structure is as follows with Ybarra opening:

20 min openings
20 min rebuttals
15 cross-examination
50 min open dialogue

The Q&A has been scratched to make room for more debate.

Resolution: Is the Vatican 1 Concept of Primacy Manifest in the 5th/6th Centuries of the Undivided Church?

Full video is free to the public:
09/07/2024

Full video is free to the public:

00:00​ Introduction & Contents04:26​ The Pseudo-Symmachian Forgeries25:27​ The Liber Pontificalis31:51​ The Donation of Constantine38:31​ The Pseudo-Isidoria...

08/27/2024

On October 12th, I'll be in Steubenville, OH, to debate Erick Ybarra
on Pints With Aquinas. As I'll be flying into and out of Pittsburg, PA, I plan on attending vespers and liturgy there. If you live there, tell me which parish should I attend.

08/27/2024

On October 12th, I'll be in Steubenville, OH to debate
Erick Ybarra on Pints With Aquinas. I'll need a parish at which to attend vespers that evening and liturgy the following morning. Suggestions from the audience?

08/24/2024

It's finally happening: October 12th, Erick Ybarra Ybarra and I will be debating the Papacy live and in person on Pints With Aquinas with Aquinas with Matt Fradd moderating.

Full video is now free to the public. This episode recounts the missions to China and the Assyrians, the early missions ...
08/17/2024

Full video is now free to the public. This episode recounts the missions to China and the Assyrians, the early missions to North America and the missions to Siberia, Kamchatka, Altai, and Kazan.

Welcome to the second video we are doing in a series on the history of Orthodox missions in the second millennium. Our first can be found here: https://www....

Most of these 19 letters from the Acacian Schism had never been translated into English prior to 2020 and we just upload...
08/14/2024

Most of these 19 letters from the Acacian Schism had never been translated into English prior to 2020 and we just uploaded them:

The following are translations of key letters in the Acacian Schism and will be added to over time. Of key interest is Epistle 80 written by Pope St. Hormisdas to Patriarch Epiphanius of Constantin…

Full video is now free to the public:
07/27/2024

Full video is now free to the public:

Catholic Answers' Michael Lofton Fails on Orthodox Christianity & Misses the Mark on Church History.Affiliate link for FreeFiltering: https://freefiltering.o...

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San Diego, CA

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