To combat poverty and injustice in Nigeria and Kenya, this article examines how religion and development connect. Notwithstanding their abundance of natural resources, both countries struggle with serious socioeconomic issues that compromise human dignity and impede long-term development. The research claims that frameworks for addressing these problems may be effectively provided by theological concepts like social justice, stewardship, and the preferred choice for the poor. The study emphasizes the critical role that Christian organizations play in advancing social justice and sustainable development by looking at the historical backgrounds, faith-based activities, and theological underpinnings in both nations. The results indicate that incorporating religious perspectives into development approaches not only offers workable answers but also improves the moral and ethical aspects of development initiatives in Kenya and Nigeria.