In May 1969 he gained a doctorate in theology at the Martin Luther University of Halle-Wittenberg on the subject of Die Funktion des Schlagers in der Gesellschaft und seine Bedeutung für das Menschenbild in der christlichen Verkündigung ("The function of the popular hit in society and its significance for the image of man in the Christian mission").
[5] In a lecture of 1973 he warned the church against "subordination to the prevailing circumstances" ("Unterordnung unter die vorgegebenen Verhältnisse") and the assumption that the realities of the DDR had any eternal aspect.
[6] Woronowicz was under close surveillance for many years by the Stasi, who in 1964 prevented him from moving to his post in Berlin and later also blocked his habilitation.
[7] In 1983 he published the samizdat manifesto "Der Marxismus als Heilslehre" ("Marxism as a Teaching of Salvation").
After his retirement in 1993 Woronowicz was active in Berlin as a theologian, expert on ecclesiastical law and philosopher of religion.