Theme of Outcasts in these chapters are primarily said about those persons, who have not accepted Christianity or resisted it. They were mainly Buddhists and also other religions.
Explanation:
Point 1. Missionaries upon arriving at the village, asks for a piece of land to construct a Church.
No.2. After the inauguration of the church, priests tries to establish them as preachers and caring.
No.3. Within a few days, the villagers tries to establish their thoughts that some other day, their ancestor's spirit would teach the missionaries a lesson.
No.4. Okonkwo had some doubt in accepting Christianity, since he considered his native religion as effective and helping. The church tries their best to spring in various.