His father having been baptized by Portuguese missionaries in 1491, Affonso committed himself to the Christianization of his kingdom. Nicknamed Mbema a Nzinga, "the son and heir of the old King," he struggled with and later expelled his unbaptized brother Mpanzu. Inadequately supported by Portuguese authorities, Affonso himself became coercive, adopting a "clean sweep" policy and destroying local ritual objects (minkisi). He alienated many people; some of them followed Mpanzu while others abandoned Christianity.
Affonso sent his son to Portugal to study for the priesthood and tried to train an indigenous elite. By catechizing 400 sons of local chiefs and baptizing huge numbers of people, Affonso attempted to create a Christian society. The lack of adequate missionary support led him to establish his own seminary, and though this was opposed by Portugal, he continued to extend Christian education in his kingdom, even creating girls' schools. His son Henrique returned as the first African bishop (1521) but died prematurely and the budding church withered for lack of sustenance. The Portuguese were more concerned with commerce than with Christianity, and Affonso died disillusioned.
Anthony J. Gittins, CSSp
Marie-Louise Martin, Kimbangu: An African Prophet and His Church (1975).