At the time of the American Revolution, almost every Christian denomination in America affirmed the Reformed doctrine of predestination. Christians believed that God alone was to be credited with their salvation—even their cooperation with God’s grace was brought about by God’s grace. God had chosen some for eternal life and not others, and only God knew his reasons for the selection. Baptists, Anglicans, Congregationalists, Dutch Reformed, and (of course) Presbyterians—all stood solidly upon this biblical teaching. One thing, however, was sure—God didn’t choose us because he knew we would believe. Rather, we believed because God chose us. God was God,...