Dwight Eisenhower actually said...

If we are believers in the tradition by which we have lived, that freedom of worship is inherent in human liberty, then we will not countena...

Clearly, civil and religious liberties are mutually reinforcing.

In that ceremony, the Bible symbolizes the solemn obligations which he takes 'to preserve, protect and defend the Constitution of the United...

Washington believed that national morality could not be maintained without a firm foundation of religious principle.