Jakob Benzelius studied at Uppsala University, graduated as filosofie magister (M.A.) in 1703 and, after a few years teaching in Uppsala, spent several years traveling and visiting foreign universities. He was professor of theology at Lund University 1718-1731, Bishop of Gothenburg 1731-1744 and succeeded his brother Erik Benzelius the Younger as archbishop in 1744. He was a learned man who wrote several influential books on theology that were used at the universities in Sweden for about a century.