On Holy and Great Thursday, the Divine Fathers, who ordered all things aright, in succession to the Divine Apostles and the Sacred Gospels, have handed down to us the tradition of celebrating four events: the sacred Foot-washing, the Secret Supper (that is, the bestowal of the dread Mysteries), the preternatural Prayer, and the Betrayal itself.
Verses to the Foot-washing
God, Whose feet trod in Eden long ago in the afternoon,
Washeth the feet of His Disciples in the evening.
Verses to the Secret Supper
Twofold is the Supper: for it is the Passover of the Law
And the New Pascha, the Blood and Body of the Master.
Verses to the Preternatural Prayer
In Thy Prayer, O Christ, Thou didst show fear,
And let great drops of blood fall from Thy face,
Ostensibly avoiding death, but thereby deceiving the Enemy.
Verses to the Betrayal
What need have ye of swords and staves, O deceivers of the people,
To put to death Him Who is zealous to redeem the world?
Synaxarion For Holy and Great Thursday
Love and the Resurrection of Christ
"The Body of God Both Nourishes and Sanctifies Me"
The Holy Altar Today Becomes the Upper Room
Who Should Commune?
Last Supper, Mystical Supper or Secret Supper?
Holy Thursday Eucharistic Epistle Reading Chanted in Plagal of the Second
The Holy Communion of Judas and our Communion
Homily on the Betrayal of Judas (St. John Chrysostom)
Homily On the Hand of the Betrayer (St. Nikolai Velimirovich)
Questions About Judas Answered
The Betrayal of Judas
The Burning of Judas in Greece
Why Did the Jews Who Came To Arrest Jesus Fall to the Ground When They Approached Him?
The Last Two Days of Holy Week With Saint Paisios the Athonite
St. Mary of Egypt and Holy Thursday
Epithets for the Passion of Christ
Meaningfully and Personally Sharing in the Passion, Cross and Resurrection of Christ
Holy Thursday Message From Metropolitan Hierotheos of Nafpaktos
Φώτιος Κετσετζής: "Εξέδυσαν με..."
The Red Eggs of Pascha
2011 Patriarchal Foot Washing Ceremony In Jerusalem on Holy Thursday
Holy Thursday in Patmos - the Sacred Niptira
Holy Thursday in Patmos 2014 (photos + video)
Patmos: Its Monastery and Passion Play (1904)
Easter on the Island of the Apocalypse - Patmos (documentary)
The Sanctification of Holy Myrrh in the Orthodox Church
Ecumenical Patriarch Encyclical On the Sanctification of Holy Chrism
The 2012 Sanctification of the Holy Myrrh (video)
Orthodox Bulgaria Marks Holy Thursday
The Miracle of the Bleeding Gospel (April 27, 1989)
A Monastery of Five Widows and a Buddhist Who Became Orthodox
Holy Week Resource Page