Fifty days after Easter the Orthodox Christians celebrate Pentecost, also known in Moldova as the Great Sunday, which is a feast in the Christian liturgical calendar commemorating the descent of the Holy Spirit upon the Apostles. Commemoration of the Descent of the Holy Spirit upon the Apostles - the Pentecost – is strongly related to a Jewish festival called the "feast of weeks" – one of the three pilgrimage festivals, arose as the celebration of the closing of the spring grain harvest. On the Pentecost, the Holy Spirit, according to the Acts of the Apostles, descended on the disciples in the form of tongues of fire accompanied by the sound of a rush of wind, and gave them the power of speaking in such a way that people of different languages could understand them. The Christian feast of Pentecost is an annual commemoration of this event, and it is solemnly observed as the birthday of the church and the feast of the Holy Spirit. The icon of the holiday is known as "The Descent of the Holy Spirit", painted in bold red and golden colours, symbolising a very important event. Also, beneath every apostle there is a tongue of fire, which symbolizes the Alight of the Holy Ghost. The Whitsuntide is an old holiday, taken over by the Geto-Dacians from the roman mythology. In the Old Testament, the Whitsuntide is, initially, a holiday of joy for the peasants, offering mellowness from the gathered harvest. The apostle Paul paid a lot of attention to Pentecost and the Christian communities could not but be happy for the harvest, for the birthday of the Church and for the miracles of the Holy Spirit, commemorating this Holiday.