Adult Education

For the Adult Education Schedule please click here


Studies in the Faith

Led by: Fr. Paul Paris

Father covers various topics of Christianity for adults via Zoom. Each session is approximately one hour.

We meet on Wednesday via Zoom starting at 1:00 pm.

Ask the Fathers /

Adult Sunday School 

Led by: Fr. Christos Kalaitzis via Zoom Only

We meet on Tuesdays via Zoom starting at 7:00 pm.

Lectures on Orthodoxy (in English)

Led by Fr. Christos Kalaitzis and Koula Fkiaras via Zoom Only

Please note: This class will resume in 2024The courses will be held in Greek and will cover, among other things, topics such as feasts, sacred mysteries, saints, architecture, and structure of the church. The meetings will take place in person and at the same time will be streamed online.

We meet on select Wednesdays via Zoom starting at 7:00 pm.

Μαθήματα για την Ορθόδοξη πίστη (στα ελληνικά)

Τα μαθήματα θα διεξάγονται στα ελληνικά και θα καλύπτουν, μεταξύ άλλων, θέματα όπως εορτές, ιερά μυστήρια, αγίους, αρχιτεκτονική και δομή του ναού. Οι συναντήσεις θα γίνονται με φυσική παρουσία και ταυτόχρονα θα μεταδίδονται διαδικτυακά. Η πρώτη συνάντηση έχει οριστεί για τις 11 Οκτωβρίου 2022 και οι λεπτομέρειες θα ανακοινωθούν στα τέλη του Σεπτέμβρη.

We meet on select Tuesdays via Zoom starting at 11:00 am.

Orthodox Catechism Class

Led by Fr. Christos Kalaitzis

What: Catechism for anyone who wants to be baptized Orthodox or just inquiring.
Who: Father Christos will moderate
When: Every Tuesday evening. We start at 7:00pm and we end around 8:00pm.
Where: Holy Trinity’s small Hall and on zoom at the same time.

We meet on Tuesday via Zoom starting at 7:00 pm.

Life In The Kingdom

The History of Eastern Orthodox Christianity from the Incarnation to the Present.

Led by Fr. Deacon David Cole

This annual fall course is designed for Orthodox and non-Orthodox alike:  inquirer, catechumen, newly-chrismated, Sunday school teacher, adult leader, or interested parishioner. Its purpose is to introduce the historic development of the Orthodox Christian Church from the First to the Twenty-First Century. The faith, worship, and belief of Eastern Christianity will be covered in greater detail during Lent 2024.

When: This class will repeat in the Spring 2024 on Monday. We start at 7:00pm and we end at 9:00pm.
Where: Holy Trinity Greek Orthodox Cathedral small hall - 3131 NE Glisan, Portland
Class Text: The Orthodox Church (1997) - Metropolitan Kallistos Ware

Course of Study:




Oct 23 & 30

Apostolic-Byzantine Christianity, Monasticism, and Great Councils (7 BC-AD 800)

Chapters: 1 - 2

Nov 6

Schisms Great and Small (325-1204)

Chapters: 2 - 3

Nov 13

Byzantine Missions to the Slavs (800-1400)

Chapter 4

Nov 20

The Greek Church under Islam (1400-1900)

Chapter 5

Dec 4 & 11

Moscow and St. Petersburg: Russian Orthodoxy (1400-1917)

Chapter 6

Dec 18

The Failed War on God:  Orthodoxy, Militant Atheism, 21st Century Survival, and Renewed Mission (1917 - Present)

Chapters 7, 8, 9


No War is Holy

Orthodox Byzantium and the Crusades

Led by Fr. Deacon David Cole

In an age of continued Middle Eastern violence, where cultures and religions clash in an ancient struggle, and where American Christians are forced to look at core issues, we are confronted with the question: Is war ever holy?  Is it a “righteous struggle” or jihad?  Is it “just and holy”?  Or is it a sad fact that is never part of God’s plan?  During the most famous of religious wars, the Crusades (1095-1291), both the Muslim world (“righteous struggle”) and the Latin West (“just and holy”) developed fairly clear statements. What of the Orthodox Christian Empire of New Rome: Byzantium?  Caught in the middle between two very aggressive cultures, what did the Eastern Romans, whose appeals for help triggered the Crusades, say about “Holy War”?  Only recently have Western scholars even attempted to answer this question.  Please come to discover the Orthodox understanding of war in this new class.

When: This class will repeat in the Spring 2024 on Wednesday. We start at 7:00pm and we end at 9:00pm.
Where: Holy Trinity Greek Orthodox Cathedral small hall - 3131 NE Glisan, Portland
Class Text: Byzantium and the Crusades) - by Jonathan Harris, Univ. of London (2003)

Course of Study:



Oct 25

The Mediterranean World in 1095

Nov 1

The Empire of Christ and the New Jerusalem

Nov 8

Holy War East, West, and In Between

Nov 15

The Byzantine Search for Security and the First Crusade

Nov 29

A New World Order: Crusader States and More Crusades

Dec 6

Darkness Descends: 1204, the Fourth Crusade and the Sack of Constantinople

Dec 13

One Recovery, One Collapse: Byzantine Survival, Crusader Demise

Dec 20

The Crusades in History