those who don't have a diety won't comprehend nor would they be bound to the concept of sin.
Funny.
It has been my experience that those not bound by a deities whims are typically the ones with the better understanding...
Rather they're bound to the rules and laws of the land (which are usually inspired by religion).
The difference being that the rules and laws of the land are enforced (or are supposed to be) by the makers of the rules.
Your deity has all manner of rules that are not enforced outside the fear of the followers.
My beliefs are my beliefs and I also believe that everyone will be judged and held accountable for that of which they did or didn't know....
And you are free to that belief.
My belief is that your above belief is merely wishful thinking.
Also, by enforce....do you mean force his will on mankind? What exactly do you mean when you say "when your chosen deity decides to enforce his rules is when I will take them seriously"...?
exactly that.
When your deity steps up and starts enforcing its rules, I will take notice.
Thus far your deity has not enforced its rules.
Many of its followers have tried forcing your deities rules onto the populace, but your deity has been conspicuously absent for the enforcement part.
Hopefully you will not try the "my deity uses its followers to enforce its rules" nonsense, because all that reveals at best is your wrong and at worse it reveals your deities incompetence.