On April 11, the Armenian Apostolic Church (AAC) begins to celebrate the Easter, one of the six patronal festivals. From sunset till late night all the churches of the Armenian Apostolic Church serve Liturgy that marks the end of Lent and the Resurrection of Jesus Christ. The celebration of the dead and resurrected god dates back to the ancient Egyptian religion, when the Egyptians celebrated the death and resurrection of God Osiris. Present Christian Easter takes its origin from the Old Testament. The old Jews celebrated the Passover (Pesach) as the holiday of exodus of Jews from Egypt.