An icon of the Christian Pentecost, in the Greek Orthodox tradition. This is the Icon of the Descent of the Holy Spirit on the Apostles. At the bottom is an allegorical figure, called Kosmos, which symbolizes the world.
"When all the members are united and faithful...when they love one another and do as Jesus said, when we are united in heart and soul, we progress spiritually and the congregation flourishes." Mother Thecla Merlo daughtersofstpaul .com
http://catholicism.about.com/od/holydaysandholidays/tp/Pentecost_101.htm Pentecost Sunday is one of the most ancient feasts of the Church, celebrated early enough to be mentioned in the Acts of the Apostles (20:16) and St. Paul's First Letter to the Corinthians (16:8). It supplants the Jewish feast of Pentecost, which took place 50 days after the Passover and which celebrated the sealing of the Old Covenant on Mount Sinai.