The Coptic Orthodox Church is an Oriental Orthodox Church founded on the teachings of St. Mark, who accompanied Peter and Paul and supported them in ministry and evangelization. Peter called him his son, as stated in the First Epistle of Peter: "Mark, my son, greets you," Chapter 5:13.
St. Mark preached Christianity in Egypt during the reign of the Roman Emperor Nero in the first century, about twenty years after the completion of Christ's Gospel and His Ascension.
The first person in Egypt to believe in Christ was a cobbler named Anianus, to whom St. Mark went after his arrival in Egypt to repair his shoes worn from traveling. The cobbler cried out to God when the needle he was working with pierced his hand. He cried: "O God, the One." When St. Mark heard this, he was surprised and saw it as an opportunity to tell him about this One God. He healed his finger and began to proclaim the Lord. Anianus and his family accepted the faith, and Mark baptized them.
St. Mark was able to convert many Egyptians to Christianity. He had a great influence on the Egyptians and, like a hammer (the meaning of his name), he destroyed the belief in idolatry. He became the first Bishop of Alexandria and the first Patriarch of the Alexandrian See. He ordained one bishop, three priests, and seven deacons.
He founded in Alexandria the first theological school in the world, a catechetical school capable of combating the ideas of the pagan school. He also established the Divine Liturgy. St. Mark preached the Gospel throughout Egypt, many people became Christians, and he founded many churches.
He was eventually martyred for his faith, and his feast day is celebrated on the 25th day of the Coptic month of Baramhat, which corresponds to April 8 in the Gregorian calendar.
The Coptic Church is a strong defender of the Christian faith. The Creed of the Council of
Nicaea, which is approved by churches worldwide, was written by one of the great sons of the
Coptic Church: Pope Athanasius (who also lived in Trier for 2 years in exile [ca. 335-337
AD]).
He wrote the Creed, which is the foundation of the Christian faith, and defended the faith
against the Arians, who claimed that the Son of God was not of the same substance as the Father,
but a created creature. He was sent into exile seven times, but he remained steadfast in faith
and defended the truth of Christianity. He is also known for his writings on the Holy Trinity
and the Incarnation of Christ.