With few exceptions humans are selfish and greedy. Given the opportunity they will take money or goods which they have not earned and belong to the public at large.
Human laws are an admission that humans are flawed and cannot operate morally individually.
There are no groups of humans that can be trusted to function fairly and justly in the face of temptation to do otherwise.
The option open to humanity is to make laws in advance that can be agreed upon in order to provide fairly for all members. Penalties must be severe enough to sway any perpetrator of dishonesty to do otherwise.
Many think religion can provide the basis of morality. This has been proven false on all occasions.
Only a government that is adequately strong can guarantee laws that have been established will be enforced.
No one should be able to buy their way out of paying the penalty for an infraction, not even the very rich.