The Free Reformed Churches of South Africa (FRCSA) heard God’s calling to spread His Gospel in the words of Matthew 28. Mission work in Pretoria was initially started in 1964 in the Mamelodi area, which is situated east of downtown Pretoria. Mission work was also started by the congregation of Pretoria, but soon it became apparent that the differences in language and culture necessitate a missionary appropriately trained for this specific calling.

The first missionary began his work in Mamelodi in 1964. Over the next 4 decades a number of missionaries would be called and currently the mission work in Pretoria is shared between two churches, namely Pretoria Maranata and Mamelodi. The FRC Pretoria Maranata is responsible for mission work in Soshanguve while FRC Mamelodi is responsible for spreading the Word of God in Nellmapius. The FRC Pretoria Maranata has 2 missionaries working exclusively in the area north of Pretoria, being Reverends Jerry Mhlanga and Pieter Boon, while the work in Mamelodi is directed by Reverend Tebogo Mogale, the minister of the FRC Mamelodi.

The black areas where mission work is currently focused developed due to the apartheid policy of the previous government. Since the developments in our democracy (1994) not much has changed within these areas, although more and more black people are moving closer to the cities. Mamelodi and Soshanguve are still both primarily black suburbs.

Mission work is focused in the following areas: 
• Nellmapius (South of Mamelodi)
• Soshanguve South East
• Soshanguve Centre
• Soshanguve South