T. Davis Bunn 
Presence (Power and Politics Book #1) 

A Small-Town Lawyer. Big-City Corruption. Can One Person Truly Make a Difference?T. J. Case, a North Carolina lawyer and politician, takes a stand of integrity that costs him his election. As he considers his future, a morning of quiet reflection is transformed into a remarkable summons that propels him into the middle of Washington politics. And accompanying this commission is an extraordinary sense of divine direction to help reshape twisted lives and challenge corrupt systems.The cause that T. J. Case represents meets with resistance at the highest levels. In a dramatic clash against a shadowy network of organized evil, The Presence emerges as the prevailing power. But obedience demands sacrifice….