I have no idea where the statement came from. But the fact is that the policy of the Vatican since Pius V has been that Catholic missionaries to Palestine were not there to convert the Jews, but to serve the Christians living there. The first missionaries that were given passage to Palestine by Muslims and Jews were our Franciscan Friars. They have always been told that they are not to try to convert the Jews or the Muslims.
However, this being said, there is no prohibition against admitting a Muslim or Jew into the Church who freely seeks it.
The Franciscan Commiseriate of the Holy Land was setup to ensure that the Holy Land Christians be served and to work with Muslims and Jews for the well-being of the people. Together they run many humanitarian projects and share in corporal works of mercy, but do not engage in preaching Christianity to either Muslims or Jews, except by their presence.
The Eastern Rite Catholic Church of Jerusalem is the main Church of Israel. Those bishops too are very careful never to preach to the Jews or Muslims with the intention of converting them. Their message is always a moral message, which obviously has common roots for all three faiths, as moral law is rooted in the commandments.
None of this is new. This dates back for hundreds of years since the arrival of the first Franciscan Friars in the 1300s. They were martyred for trying to convert the local people. Finally, Pope Pius V, ordered the Franciscans to limit their activity to serving the Christians and promoting the faith through their presence, especially their charity.
The people of Israel and the Palestinian region are not eligible to become Roman Catholics. If they choose to become Catholic they must join the Church of Jerusalem, which is Eastern Rite. The Latin Church does not try to invade the jurisdiction of the Eastern Churches.
Fraternally,
Br. JR, OSF
