Apostle Oscar Kabanga Nwanza was called into priestly ministry in 1993 and has worked in various appointments, very recently as a seminar trainer and editor for NAC-Nigeria website. He received his ordinations as follows:

* Priest, 18/01/1993: By Apostle Faustin Wingi (in DR Congo)
* Evangelist, 24/01/1999:  By Apostle Gunter Beck
* District Evangelist 01/05/1999: By Chief Apostle Richard Fehr
* District Elder 02/04/ 2017: By District Apostle Michael Ehrich
* Apostle 27/01/2019: By Chief Apostle Jean Luc Schneider