Sin is in the heart of every human, from conception onward, not in cash or any other inanimate medium of exchange
The wages of sin is death, and the threat of death is in the hands of whoever controls one's nehavior.
That is why in ancient Egypt, all the gold was in the hands of the royalty, and all the straw (and beer) was in the hands of the serfs.
Now, who was it that did all the crying?
The cashless ones, that's who.
(This is a perpetual truism, not to be ignored.)
It is the LOVE to control the medium of exchange that is the root of all injustice, not the money itself.
God uses resources or the medium of exchange for them in His economics as a way of getting things done temporally, but but not a tool to subjugate His children one to another, one would suppose.