Jimmy The Baptist: Carter Redefined 'evangelical,' From Campaigns To Race And Women's Rights

Before reaching the 1978 peace deal between Egypt's Anwar Sadat and Israel's Menachem Begin, Jimmy Carter managed months of intense preparation, high-stakes negotiations at Camp David and a field trip to the Gettysburg battlefield to demonstrate the consequences of war.

But looking back on his most celebrated foreign policy achievement, the 39th president said intricate diplomacy ultimately wasn't the deciding factor.

"We finally got an agreement because we all shared faith in the same God," Carter told biographer Jonathan Alter, as he traced his Christianity, Begin's Judaism and Sadat's Islam to their common ancestor in each religion's sacred texts. "We all considered ourselves the sons of Abraham."

Carter, who Sunday at 100, was widely known as a man of faith, especially after his long post-presidency became defined by images of the Baptist Sunday School teacher building homes for low-income people and fighting diseases across the developing world.

Yet beyond piety and service, the Georgia Democrat stood out from his earliest days on the national stage with unusually prolific, nuanced explanations of his beliefs. Carter quoted Jesus and famous theologians and connected it all to his policy pursuits, living out his own definition of what it means to be a self-professed Christian in American politics.