Mark Dornford-May's movie, only his second feature, is a retelling of the Jesus story in 21st century Africa. Stylistically it's most likely inspiration is Pier Paolo Pasolini's Gospel According to St. Matthew (1964), which, while ostensibly set in the correct historical period, embraced anachronistic elements (like American gospel songs on the soundtrack) while paring away the opulent details that characterized Hollywood gospel films. Son of Man is a very musical film, its range extending from spiritual ecstasy to choral defiance. The music carries much of the burden of the film's spirituality. The story, as told here, is arguably more mundane.
The opening promises something less mundane. We start with the temptations in the desert, Satan goading a Jesus in robes and whiteface to make stones from bread, jump off a cliff, etc. Jesus (Andile Kosi) has enough, finally, and shoves the Evil One off a sand dune. "Get thee behind me Satan," he says -- familiar enough. What follows isn't: "This is my world!" Satan disagrees, of course.
This trailer, uploaded to YouTube by AiMfilmfest, gives a good idea of the mix of modernity and archetypes throughout the picture: