so why do people keep talking about “separation of church and state? the u. s. constitution says “congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof”… So what does that have to do with separation of church and state? the intention seems to be to keep the government out of the church, not the other way around. the phrase “separation of church and state” came from a letter written by Thomas Jefferson to the Danbury babtist church in Connecticut. Jefferson’s intention was to assure the church that there was a “wall of separation” to keep the government from interfering in the church’s business. Jefferson also believed that the Bible should be taught in schools, and from what I’ve read so did most of the founding fathers of this country. read the u. s. constitution. you won’t find anything about a “separation of church and state”.