Book excerpt: As Christianity in Africa is witnessing an unprecedented growth in membership, the author argues that in order to sustain its momentous growth and deepen the faith particularly among Catholics, the Church needs to acculturate an African model that resonates with Africans’ religiosity, cultural consciousness and worldview. The author contends that the model of the Church as the Extended family of God is best suited for an African ecclesiology and deepening the faith of African Christians.