If it isn’t immediately obvious, this is an illustration of the Pentecost story from the Acts of the Apostles.
I consider Jesus Mafa art to be amongst the best examples of African Christian art. You can find much more art like this at www.jesusmafa.com/
JesusMafa.com features many scenes translated from the Gospels by Christians in Sahelian Africa (that is, the climatic transition zone between the Sahara desert in the north and the Sudanian Savanna to the south). There is an energy in many of these images that speaks of the energy of the AFrican Christian experience.