Date: April 30, 2012 04:49PM
They didn't coin the phrase although they used it. Even if they did it is not as powerful coming from known deists. Roger Williams coined the phrase, one of the founders of the Baptist church in America, an abolitionist and and an all round amazing religious figure.
Not that it really matters but originally the establishment clause was fought for by religion itself.http://www.wallofseparation.us/the-origins-of-wall-of-separation/