Uncoupling the language of “freedom under God” from its Christian libertarian roots, Eisenhower erected a bigger revival tent, welcoming Jews and Catholics alongside Protestants, and Democrats as well as Republicans. Rallying the country, he advanced a revolutionary array of new religious ceremonies and slogans.The rest of Washington consecrated itself, too. The Pentagon, State Department and other executive agencies quickly instituted prayer services of their own. In 1954, Congress added “under God” to the previously secular Pledge of Allegiance. It placed a similar slogan, “In God We Trust,” on postage that year and voted the following year to add it to paper money; in 1956, it became the nation’s official motto.
During these years, Americans were told, time and time again, not just that the country should be a Christian nation, but that it always had been one. They soon came to think of the United States as “one nation under God.” They’ve believed it ever since.
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.