Is there room for religion in politics? In this insightfully written book, Paul Marshall argues that Christians can and should approach politics in a way informed by faith. Drawing on traditions of both Catholic and Protestant political thought, Marshall analyzes the ways in which religion influences our understanding of power, justice, and democracy. By exploring the biblical background of modern issues, Marshall provides an indispensable guide for Christians searching for a way to interject their religious convictions into their political actions. In an age when the relationship between politics and religion is becoming ever more important—and ever more blurred—both in America and beyond, God and the Constitution is essential reading for anyone interested in the intersection of faith and government.