The point he's trying—but failing—to make is to invoke the core underpinnig of American legal philosophy: that people intrinsically have rights as an aspect of their being, and that they grant their government limited authority to regulate rights in order to ensure that nobody's rights get taken away or trampled on. Though the Declaration of Independence isn't part of the Constitution, it's useful rhetoric for understanding the legal philosophy of the United States, where everything I just said is phrased as:

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. —That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed [...]

He idiotically phrases this as "divine power" probably because of this passage, but the actual salient point is that laws and states simply do not possess the power to grant or bestow the rights that already exist independently of them.