Proposition.
It’s the philosophical Christian foundation of the United States.
You are reaching here. The country was indeed envisioned as resting on the natural law foundation of Christianity, but those people who considered themselves good Christians were interested in their own welfare, and had given not much thought to the welfare of the slaves.
Trying to make the Declaration of Independence about slavery is just misdirection. It was about Independence for states, which was the very thing Lincoln was fighting against.
I think you’re special. Sorry. You’re the one straining and trying hard to not understand the logic of four score and seven years later.
I don’t think you’re really this obtuse.