Biblical theology
After 1944 he played an active role in gaining Catholic Church support for the establishment of the State of Israel. His support for Zionism and the establishment of Israel was the result of his cultural and religious openness toward other faiths and cultures, and especially concern with the fate of Jews after the war. He was one of the Vatican's most sympathetic diplomats toward Jewish immigration to Palestine, which he saw as a humanitarian issue, and not a matter of Biblical theology.