Christianity, Islam and Judaism should work for Middle East peace, Pope Benedict XVI said on Sunday, opening a Vatican conference set to include senior Muslim and Jewish leaders for the first time.
The three main religions in the Middle East should "promote spiritual and cultural values that unite people and exclude any form of violence," Benedict said at a mass to mark the start of the special synod of Catholic bishops.
The international community should support "a trustworthy, loyal and constructive path towards peace" in the region, he said in his sermon.
"This is also a good occasion to continue our constructive dialogue with the Jews... as well as with the Muslims," the pope added.
The synod has been called mainly to discuss pastoral issues linked to the dwindling Christian communities in the Middle East, but also aims to foster peace between Israel and the Palestinians and to counter Islamic extremism.
"The vital dialogue with Judaism is one of the main objectives of the synod, along with the difficult but necessary dialogue with Islam," Nikola Eterovic, the archbishop in charge of organising synods, said earlier.
He added that Arab Christian communities were "a natural bridge with Islam."
Referring to the Middle East conflict, he said: "We hope we will be able to achieve peace and that the synod marks a step forward in this direction."
Arabic will be one of the official languages at the synod, which will bring together Catholic clergymen, an Iranian ayatollah and a senior rabbi.
The Muslim and Jewish leaders will however address the synod separately and will not meet, organisers said.
The synod talks are set to get under way on Monday and the conference runs for two weeks until October 24.