separation between church and state
it is true these words do not appear in any early national document. What may be Jefferson's second most-quoted phrase is found instead in a letter he sent to a Baptist association in Danbury, Connecticut.

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.

He wrote both guess which one is in the Bill of Rights.