Arthur Võõbus was born in Matjama village, Tartu County, Livonia, Russian Empire as the son of a teacher. In 1926, he completed his schooling at the Hugo Treffner Gymnasium in Tartu, then in 1932 his studies at the Theological Faculty of the University of Tartu. That same year he was ordained a priest. From 1933 to 1940 he was a pastor in the Estonian Evangelical Lutheran Church in Tartu. Arthur Võõbus graduated as master of theology in 1934 with a thesis on "The true Christian, true Christian life and the true Christian church by Soren Kirkegaard". In parallel, Arthur Võõbus worked in libraries and manuscript collections in Rome, Paris, London, Berlin and Leipzig on theological texts in Syriac. His language skills were acquired at the university under Uku Masing.
In 1936 he married Ilse Luksep, a daughter of a wealthy merchant family, which, along with his job in a large parish, provided the material basis for his research. Towards the end of the 1930s Võõbus worked on the publication of Syriac texts. In 1940 he fled the Soviet occupation of Estonia to Germany. His dissident attitude led to the observation by the Gestapo. After the occupation of Estonia by German troops Võõbus returned to Estonia. His doctoral thesis in 1943 at the University of Tartu was concerned with monasticism in Syria, Mesopotamia and Persia before the 10th Century.
In 1944 Võõbus and his family fled a second time before the Soviet reoccupation of Estonia. From 1944 to 1948 he worked as a pastor in refugee camps, 1946–1948 he was professor of church history at the Baltic University at Pinneberg, near Hamburg. When this university was closed, he worked in London at the British Museum, from then until 1977 as professor of the New Testament and the ancient church history at the Lutheran School of Theology at Chicago (LSTC). Arthur Võõbus was a member of several scientific academies, including the Belgian Royal Academy of Arts and Sciences. Võõbus died on 25 September 1988 in Oak, Park, Illinois, United States
The Institute of Syrian Manuscript Studies, Chicago maintains the Professor Arthur Võõbus Collection of Syrian Manuscripts.
- The Communist Menace, the Present Chaos and Our Christian Responsibility 1957
- Studies in the history of the Estonian people Volume 11 Arthur Vööbus
- Reference Library of European America 1998 "Arthur Voobus (1909-1990) obtained his doctorate in Estonia in 1943 and came to the United States after the war."
- Chicago Tribune obituary