He was ordained to the priesthood on 28 September 1934. He served as a faculty member at the Seminary of Veszprém and did pastoral work in the diocese of Veszprém from 1934 until 1944. He served as private secretary to the future Cardinal József Mindszenty, who was at that time Bishop of Veszprém. He was imprisoned in a Nazi prison from November 1944 to February 1945. He was appointed a Privy chamberlain supernumerary on 22 January 1946.