Levin managed to escape from Poland at the beginning of World War II and in 1940 reached Palestine, where he was active in rescue operations from Nazi-dominated Europe. When the Central Committee of Agudat Israel met in Marienbad (1947), he was put in charge of the Erez Israel branch of the movement. Levin was elected to the First Knesset and was minister of social welfare in the first Israel government. He served in this capacity until 1952, when he resigned during the controversy over some form of national service for women. At the Fourth Great Assembly (Jerusalem, 1954), he was elected president of the World Actions Committee and chairman of the World Executive of Agudat Israel.