Whom do the missionaries allow to join their church? What is unusual about this?

THe Christian Church takes converts that were opressed by the Igbo religeon and cultural system. Mr. Kiaga, an African convert, takes charge of the new church in Mbanto; the white priest goes to Umuofia. Initially, Nwoye does not dare to go into the church, but he listens to the men preaching the gospel in the market. He begins to learn the simple stories from the Bible. In Christianity, Nwoye finds comfort for things that have long disturbed him. But the religion also provides him with a way to rebel against his father. The one month mark passes, by the end of which the gods should most certainly take their revenge. The Christians remain alive. They also win their first female convert, a woman named Nneka. She is pregnant; the previous four times she has given birth, she has had twins. Following Igbo custom, the twins were abandoned to a death by exposure. She flees her family and takes refuge with the new church.