THE COPTIC FEASTS AND WORSHIP - Advent FastMoses' Law arranged seven major feasts (lev. 23), which had their rites and sanctity, as a living part of the common worship. These feasts are: the Sabbath or Saturday of every week, the first day of every month, the Seventh Year, the Year of Jubilee, the Passover (Pasch), the feast of the weeks (Pentecost), the feast of Tabernacles (feast of Harvest). After the Babylonian exile two feasts were added, i.e., the feast of Purim and the Feast of Dedication. The aim of these feasts was to revive the spirit of joy and gladness in the believers' lives and to consecrate certain days for the common worship in a holy convocation (assembly) (Exod 12:16; Lev. 23); and to remember God's promises and actions with His people to renew the covenant with Him on both common and personal levels. The feasts were a way leading to enjoy Christ, the continuous "Feast" and the Source of eternal joy.
When the Word of God was incarnate and became man, He submitted to the Law and attended and celebrated the feasts. However, He diverted the attention from the symbol to reality, and from the outward appearances to the inner depths (John 2, 5, 6, 7, 12); to grant the joy of the feast through practicing the secret communion with God and receiving His redeeming deeds.
Almost all the days are feasts to the Coptic Church. Although she is known for bearing the cross, she is eager to have her children live, in the midst of sufferings in spiritual gladness. She is capable, by the Lord's help, to raise them above tribulations. In other words, the Coptic Church is continuously suffering and joyful at the same time, her feasts are uninterrupted, and her hymns with a variety of melodies are unceasing.
A CHURCH OF JOY
One of the main characteristics of the Coptic Church is "joy," even in her ascetic life. St. John Cassian described the Egyptian monks who spread from Alexandria to the southern borders of Thabied (Aswan) saying that the voice of praise came out perpetually from the monasteries and caves, as if the whole land of Egypt became a delightful paradise. He called the Egyptian monks heavenly terrestrials or terrestrial angles.
St. Jerome informs us about an abbot called Apollo who was always smiling. He attracted many to the ascetic life as a source of inward joy and heartfelt satisfaction in our Lord Jesus. He often used to say: "Why do we struggle with an unpleasant face?! Aren't we the heirs of the eternal life?! Leave the unpleasant and the grieved faces to pagans, and weeping to the evil-doers. But it befits the righteous and the saints to be joyful and pleasant since they enjoy the spiritual gifts."
This attitude is reflected upon church worship, her arts and all her aspects of life, so that it seems that the church life is a continuous unceasing feast. Pope Athanasius the Apostolic tells us in a paschal letter that "Christ" is our feast. Although there are perpetual feasts the believer discovers that his feast is in his innermost, i.e., in the dwelling of Christ the life-giving Lord in him.
The church relates and joins the feasts to the ascetic life. The believers practice fasting, sometimes for almost two months (Great Lent) in preparation for the feast, in order to realize that their joy is based on their communion with God and not on the matter of eating, drinking and new clothes.
The Coptic feasts have deep and sweet hymns, and splendid rites that inflame the spirit. Their aim is to offer the living heavenly and evangelic thought and to expose the Holy Trinity and Their redeeming work in the life of the church, in a way that is simple enough to be experienced by children, and: deep enough to quench the thirst of theologians.
from: http://www.copticchurch.net/topics/thecopticchurch/church2-1.html#feasts