I often hear it said that our Seven Principles and Six Sources are not a creed, but a covenant. I guess I'm having a hard time understanding the difference. The Seven Principles and Six Sources are a statement of what Unitarian Universalists accept to be true or, in the case of the Sources, what they accept to be valid ways of knowing, correct? Can someone please explain to me how the Seven Principles and Six Sources aren't a creed?

When exactly did Unitarian Universalism become a post-Christian religion? Was it immediately after the UU merger in 1961? What religions were included when Unitarian Universalism became post-Christian? Was it mostly just Christians and Humanists, or were there others as well?