The FIRST founding document of this nation states: We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.
Still no mention of the Bible, of course, but absolute affirmation that our Founders recognized that our rights do NOT derive from man.
The DOI wasn’t a “founding document” in as much that it only created a separation from England and established sovereignty. It didn’t truly found our nation. The Constitution did that.