Even without that, if the earth is God’s, and all that is in it, what is Caesar’s?

Nothing.

Everything is on loan from God.

Now we could argue by law that if Caesar owns the silver, puts his likeness on it, and says that the cost of using it is a tax, that’s potentially sensible.

It doesn’t describe what we have with the dollar bill, though. The dollar bill / FRN is a legal tender for all debts public and private, and is a bill for a dollar. We are trading notes that claim, by name, that they’ll pay us a dollar, but the note issuer already defaulted decades ago.

The more dollars there are, the more they owe us.