Matthew Kukah, bishop of Sokoto Catholic diocese, has accused President Muhammadu Buhari of nepotism.
In his Christmas message on Friday, the bishop said there could have been a coup if a non-northern Muslim president does a fraction of what Buhari did.
He accused the president of institutionalising northern hegemony by â€œreducing others in public life to second-class statusâ€.
â€œThis government owes the nation an explanation as to where it is headed as we seem to journey into darkness,â€ he said.
"The spilling of this blood must be related to a more sinister plot that is beyond our comprehension. Are we going to remain hogtied by these evil men or are they gradually becoming part of a larger plot to seal the fate of our country?
â€œPresident Buhari deliberately sacrificed the dreams of those who voted for him to what seemed like a programme to stratify and institutionalise northern hegemony. He has pursued this self-defeating and alienating policy at the expense of greater national cohesion.
â€œEvery honest Nigerian knows that there is no way any non-Northern Muslim President could have done a fraction of what President Buhari has done by his nepotism and gotten away with it.
â€œThere would have been a military coup a long time ago or we would have been at war. The President may have concluded that Christians will do nothing and will live with these actions.
â€œHe may be right and we Christians cannot feel sorry that we have no pool of violence to draw from or threaten our country. However, God does not sleep. We can see from the inexplicable dilemma of his North.â€