 He also served as substitute professor of theology (1921–1923) and professor of Sacred Scripture and Patrology (1923–1927).In 1927 he became a teacher of religion in secondary school and became involved in numerous student movements in the Genoa district.He received his episcopal consecration on 19 March 1947 from Archbishop Giuseppe Siri, with Archbishop Angleo Rossini and Bishop Francesco Canessa serving as co-consecrators.