The first Baptist in America, Roger Williams, was actually the first to use the phrase “wall of separation”. In his quote below, Williams compared the true church as a sort of garden of Eden, and he referred to this world’s secular realm as the “wilderness”. He stated:
“[W]hen they have opened a gap in the hedge or wall of Separation between the Garden of the Church and the Wildernes of the world, God hathe ever broke down the wall it selfe, removed the Candlestick, and made his Garden a Wildernesse.”
Williams was later to be banished from the colonies for his seemingly liberal and heretical views of a division between Church and State. Previous, such a secular approach to government had never existed because the Crown’s Head of State was ordained and was to dutifully and responsibly act as “Defender of the Faith”. Williams realized that a state-run religion would create a spiritually void culture of Christendom (in borrowing a term from Soren Kierkegaard), rather than, encourage true and genuine faith that would save one’s soul. Therefore, a joint State and Church was seen as an enemy of true and genuine faith. He believed to mix religion with politics would result in politics; and that to mix church and state would corrupt the church.
To this day, Baptists and Evangelicals believe that true religion must be voluntary and arise from a free conscience (thus, the Baptist doctrine of “Soul Liberty”).