What does Freedom of Speech have to do with separation of church and state? You want to live in a theocracy??? Are you insane?
One Amendment; the first in the Bill of Rights…
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.
Freedom of religious practice, and freedom of speech, are enumerated immediately adjacent to one another, in the very same sentence.
To prevent a “theocracy”, it it neither necessary nor justifiable to suppress either of these rights as a condition of exercising the other. I think that if anything, the disenfranchisement of religiously-influenced opinions has brought about overtly insane public policies.