The second Sunday following the Glorious Resurrection of Our Lord Jesus Christ is the Sunday of the World Church. It commemorates the first Church of Jerusalem, established by Christ.
On the first day of the Jewish festival of Passover, Jesus instructs two of the Apostles, Peter and John, to go into Jerusalem and meet a man, who would direct them to a house where Christ and His Apostles could celebrate the Passover Feast. Peter and John are led to the “Upper Room” of a house, where they make the necessary preparations for the meal. Later that evening Christ and the Twelve Apostles sit together to eat supper.
Christ speaks to them and says, “I have desired to eat this Passover with you before I suffer: For I say unto you, I will not any more eat thereof, until it be fulfilled in the Kingdom of God. And He took the cup, and gave thanks, and said, “Take this, and divide it among yourselves: For I say unto you, I will not drink of the fruit of the vine, until the kingdom of God shall come.” And he took bread, and gave thanks, and broke it, and gave unto them, saying, “This is my body which is given for you: this do in remembrance of me.” Likewise also the cup after supper, saying, “This cup is the new testament in my blood, which is shed for you.” (Lk 22:15-20)
This “Last Supper” was the event where Jesus Christ established the Sacrament of Holy Communion, which we celebrate every Sunday during the Divine Liturgy in Armenian Churches throughout the world. The Upper Room in Jerusalem is considered to be the first Church, as founded by Christ.
The Sunday of the World Church is also called “Green” Sunday, which according to Archbishop Malachia Ormanian, is the popular name of the feast and is linked with the awakening of nature in the springtime.