Marian Jaworski studied in Lviv and Krakow trays Catholic theology and philosophy and was ordained a priest in 1950. He then worked for two years as a parish pastor before he received his doctorate in both theology and in philosophy and history of philosophy in the course of ongoing studies. From 1970 to 1984, he knew the job of secretary at the Science Council of the Polish Episcopal Conference from 1976 to 1981, he worked first as dean and from 1981 as rector of the Pontifical Academy of Theology in Krakow.
Marian Jaworski was appointed on 21 May 1984 as Titular Bishop of Lambaesis and Apostolic Administrator for the part in Poland Lviv territories of the diocese by Pope John Paul II. He received his episcopal consecration on 23 June 1984, the then Archbishop of Krakow, Cardinal Franciszek Macharski; Co-consecrators were Henryk Roman Gulbinowicz, the then Archbishop of Breslau and later cardinal, and Jerzy Karol Ablewicz, the then Bishop of Tarnów.
1985 awarded him an honorary doctorate from the University of Bonn. In 1991, Marian Jaworski by Pope John Paul II appointed Roman Catholic Archbishop of Lviv. In 1998 he was created " in pectore " cardinal and included as a cardinal priest with the titular church of San Sisto in the College of Cardinals on 21 February 2001.
On 21 October 2008, Pope Benedict XVI. Jaworski reasons of age pre- mounted resignation to.