• Home
  • About PI
  • Sermon Resources
    • Biblical Resources
    • Theology
    • Apologetics
    • About Preaching
  • Sermons
    • Historical American Sermons
    • Patristic Sermons
      • Festal Sermons
        • Nativity of Theotokos
        • Holy Cross
        • Entrance of Theotokos
        • Christmas
        • Theophany
        • Meeting of Christ
        • Annunciation
        • Palm Sunday
        • Ascension
        • Pentecost
        • Transfiguration
        • Dormition of Theotokos
      • Lenten Sermons
        • Triumph of Orthodoxy
        • St. Gregory Palamas
        • Veneration of Cross
        • St. John Climacus
        • St. Mary of Egypt
      • Paschal Sermons
  • Webmaster Resources
  • Preachers Institute Store
  • Bible Challenges

PREACHERS INSTITUTE

You are here: Home / Archives for Sermon Resources / Theology / Apologetics

June 5, 2017 By Fr. John A. Peck

Eucharistic Bread: Leavened or Unleavened?

In the ninth century the use of unleavened bread had become obligatory in the West, while the Orthodox continued the exclusive offering of leavened bread.  The issue became divisive when the provinces of Byzantine Italy which were under the authority of the Patriarch of Constantinople were forcibly … [Read more...]

Filed Under: Apologetics, Biblical Resources, Sermon Resources, Theology Tagged With: bread, eucharist, leavened, unleavened

May 13, 2017 By Fr. John A. Peck

Did St. Mark of Ephesus Consider the Latins to be a Church?

by Metropolitan Hierotheos (Vlachos) The following is an excerpt from the Metroplitan's very important "Intervention and Text to the Meeting of the Hierarchy of the Church of Greece (November, 2016)," which can be found here in Greek and here in English. Unfortunately, during the "Council of … [Read more...]

Filed Under: Apologetics, Metropolitan Hierotheos (Vlachos), Sermon Resources

April 17, 2017 By Fr. John A. Peck

Can a Scientist Believe in the Resurrection?

by Ian Hutchinson, MIT I’m a professor of nuclear science and engineering at MIT, and this weekend, I’m celebrating the resurrection of Jesus. So are dozens of my colleagues. How can this be? Hypothesis one: We’re not talking about a literal resurrection. Perhaps it is just an inspiring myth that s … [Read more...]

Filed Under: Apologetics, Sermon Resources Tagged With: Ian Hutchinson, MIT, Resurrection, science, scientist

  • « Previous Page
  • 1
  • …
  • 9
  • 10
  • 11
  • 12
  • 13
  • …
  • 41
  • Next Page »
Preachers Institute

Recent Posts

  • The Holy Fathers on Witchcraft
  • Clothing as Missionary Work?
  • Epicstar Casino
  • On the Essence of Icons by St. Photios
  • Vavada Casino
  • Vavada Vasino
  • casino
  • Pokerdom Casino
  • St. John of Damascus’ Critique of Islam
  • Vavada Casino
  • Vavada Casino
  • Vavada Casino
  • Pokerdom Casino
  • Approaches to God: East and West
  • Vavada Casino

Preachers Institute Archives

Preachers Institute

The Online Orthodox Christian Homiletics Resource
Fr. John A. Peck, director
Phoenix, AZ

Find what you’re looking for

The Deep Dark Archives

Vocations in Orthodoxy

Good Guys Wear Black

Copyright © 2026 John A. Peck · Designed by John A. Peck