In the Christian liturgical calendar , Maundy Thursday or Holy Thursday is the feast or holy day falling on the Thursday before Easter that commemorates the Last Supper of Jesus Christ with the Apostles . It is the fifth day of Holy Week , and is preceded by Holy Wednesday and followed by Good Friday .

On this day four events are commemorated: the washing of the Disciples' feet by Jesus Christ, the institution of the Mystery of the Holy Eucharist at the Last Supper , the agony of Christ in the Garden of Gethsemane , the betrayal of Christ by Judas Iscariot .
The morning celebration of these events marks the beginning of what is called the Easter Triduum or Sacred Triduum. The Latin word triduum means a three-day period, and the triduum in question is that of the three days from the death to the resurrection of Jesus. It should be noted that for Jesus and his followers a day ended, and a new day began, at sunset, not at midnight, as it still does today in the modern Jewish calendar.[1] The Last Supper was held at what present-day Western civilization considers to be the evening of Holy Thursday but what was then considered to be the first hours of Friday. Its annual commemoration thus begins the three-day period or triduum of Good Friday, Holy Saturday and Easter Sunday, days of special devotion that celebrate as a single action the death and resurrection of Christ, the central events of Christianity.
I have an insatiable interest in Judaism and Christianity. I have learnt many facets of those great religions. All right, today is Maudy Thursday.
I have a question on the following sentence:
The morning celebration of these events marks the beginning of what is called the ...
For me the subject is 'these events' which bears the plural nature.
So the word 'marks' inappropriate. It should be 'mark'.
What do you think?
The celebration is the subject. Morning, of these events are both qualifiers/determiners/attributes.
Just an aside, since you mentioned the Latin Triduum: 'Maundy' comes from the Latin mandatum, meaning 'commandment'.
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It's so useful having a church organist in our midst. What you can tell me about the meaning of Tenebrea? I never went to that one, but one of my friends said she always loved how beautiful the music was at that service.
Tenebrae esentially means "darkness". The service can take many different forms, sometimes including thunder produced by various means.
Is that a service that you enjoyed being a part of?
Students: Are you brave enough to let our tutors analyse your pronunciation?
It's dark, penitential, about as joyful as Yom Kippur.