Did you know that many people in Greece and even the monks on Mt. Athos were involved in rescuing and saving the Jews during WWII?
Many Jewish musicians play at Greek Orthodox weddings and vice versa.
In regard to latter statement, Jewish musicians certainly performed at my brother's wedding.
In regard to the former statement, the pro-Jewish stance of the Church of Greece and the Greek Orthodox Archdiocese of North and South America during WWII seems unambiguous:
Quotes from the United States Holocaust Memorial Museum (http://www.ushmm.org/museum/exhibit/online/greece/greece.pdf
"In contrast to many Catholic and Protestant religious leaders in Europe, who either supported the Nazi policy of extermination of the Jews, or did nothing to stop it, Archbishop Damaskenos of Greece formally protested the deportation of the Jews."
"After learning of the deportation of the Thessaloniki Jews in March 1943, Damaskenos sent a letter of protest to the Germans. This letter was composed by the famous Greek poet, Angelos Sikilianos, and was signed by many members of the Athens intelligentsia. Damaskenos included this passage from the Bible, There is neither Greek nor Jew," emphasizing that, in the Greek Orthodox religion, all people are the same."
"When General Stroop, high SS and police leader for Greece, found out who was behind the letter, he threatened to shoot Damaskenos. The archbishop bravely reminded the German that, "According to the traditions of the Greek Orthodox Church, our prelates are hung and not shot. Please respect our traditions!"
"Damaskenos called Police Chief Evert of Athens to his office and said, "I have spoken to God and my conscience tells me what we must do. The church will issue false baptismal certificates to any Jew who asks for them and you will issue false identification cards." Due to the courageous stance of Archbishop Damaskenos, thousands of Greek Jews were spared."
"The Germans chose March 25, 1944, Greek Independence Day, to deport the Jews of Volos, and any Jews remaining on the Greek mainland. Due to the valiant efforts of Rabbi Pessah, Archbishop Ioakim (honored at Yad Vashem as "Righteous Among Nations"), and the EAM, 74 percent of Volos’ Jews were saved. Of more than 1,000 Jews living in the city in March 1944, only 130 were deported to Auschwitz-Birkenau."
"The Jews of Zakynthos share a similar history with the Jews of the Ionian islands, except that all 275 Jews of Zakynthos survived the Holocaust. The courageous actions of Bishop Chrysostomo and Mayor Loukas Carrer in helping those individuals led Yad Vashem to include them in the "Righteous Among the Nations." In 1944 Mayor Carrer was ordered at gunpoint to hand over a list of Jews residing on the island. The list was presented to the Germans by Bishop Chrysostomos containing only two names: Mayor Carrer and Bishop Chrysostomos. The bishop bravely told the Germans, "Here are your Jews. If you choose to deport the Jews of Zakynthos, you must also take me and I will share their fate."
The meaning of all of this is that the hierarchy of the Church of Greece was willing to sacrifice their lives for the lives of the Jews.
It is unfortunate that is is more difficult to document the North and South American Greek Orthodox Archdiocese in this regard due to the trickiness of finding the correct terms for microfilm documentation, but Archbishop and future Patriarch Athenagoras was a proponent for Jewish causes. For example: NY Times, Aug 30, 1944 pg15: "ASK GOVERNMENT TO SUCCOR JEWS" "Rabbis and Greek Churchmen Make Plea to Congress, British Embassy and White House".
The emphasis being that the Orthodox Church that I know and grew up in was not antisemitic.