Demographic, geographic and natural resource factors make Nigeria ‘The natural leader of black Africa’. Political assertion of country's divided religiosity, as witnessed in several recent incidents and trends, have blurred this overdrawn big, black and wealthy picture-postcard imagery of Nigeria. Religion was always predominant in country's public discourses but scholars willfully ignored it for sake of national unity. Scholars tried to hide it behind ethnicity but ultimately religion succeeded in emerging from ethnicity. This article tries to understand the Christian activism in concentric contexts of religious, cultural and ultimately the political-public universe of the country. Nigerian Christians are formidable force there, which is illustrated well in their representation in powerful positions and their fierce resistance to Islamist measures of the federal and Muslim-majority northern provincial governments. There are several significant sources of their strength but equally significant sources of their weakness as well.