He was a Danish–Norwegian priest and theological writer, who established Norway's first printing-house, and wrote the first description of Christiania (currently Oslo).
He then moved to Christiania, where he died as an indigent in the Oslo hospital at approximately 95 years of age.
He also wrote a book of sermons, Postilla catechetica, in eight volumes including nearly 9,000 pages.
This historic initial Norwegian printing press lasted only one year, but in 1646 Berg established a branch of the Melchior Marzan printing-house from Copenhagen in Christiania.
[1][3] Bang's press is also noted for printing the Aggerhus-Acter which provided independent accounts of the ongoing Gyldenløve War with Sweden.