Since 1997, The South African national anthem has been a hybrid song combining new English lyrics with extracts of the hymn "Nkosi Sikelel' iAfrika" and the former anthem "Die Stem van Suid-Afrika/The Call of South Africa". Nkosi Sikelel' iAfrika was composed in 1897 by Enoch Sontonga, a Methodist school teacher. It was originally sung as a church hymn but later became an act of political defiance against the apartheid government.
Source
BC 668 (B1.28),