Clad in his black cassock and energised by the frenetic beat, Jean-Pierre Mongambi, Kinshasa's "rapping priest", roamed underprivileged districts using rap to bring the gospel to the city's youth.

"Nayambi, nayambi" — "I believe" in the local language — he rapped, as clusters of young people jumped in time with the beat, clutching their smartphones.

"Rap is not a sin", he proclaimed, winning immediate applause from his audience in the poor neighbourhood of Ngaliema in the capital of the Democratic Republic of Congo.

With a black cap on, the 47-year-old rapping priest performed as three bodyguards kept watch over the stage.

Mongambi has become something of a celebrity in the DRC, and beyond, thanks to his rap tracks based on psalms and prayers and concerts that are widely shared on social media.