Xhosa journalist, minister, translator, composer of hymns, and collector of black South African fables, legends, proverbs, history, praises, and customs. His translation of John Bunyan's Pilgrim's Progress (U-Hambo lom-Hambi, 1866) had almost as great an influence upon the Xhosa language as the Authorized Version of the Bible had upon the English.

Soga was a part of the first truly literate generation of Xhosa speakers and the first African minister ordained in Great Britain (Glasgow, 1856). During the 1860s he was a contributor to Indaba (“The News”), published in Lovedale, Cape Colony. He addressed himself primarily to a Christian Xhosa audience on such topics as “Amakholwa nama-Qaba” (“The Believers and the Pagans”), “U-Tywala” (“Beer”), and “Amakristu Neenkosi” (“The Christians and the Chiefs”), reflecting social changes of the time and the widening gulf between pagan and convert.

The many hymns Soga composed were very popular in the 19th century and are still sung in South African churches today. His literary influence upon the subsequent generation of Xhosa writers was notable.