The modern definition of sin is “an act considered to be a transgression against divine law”.

The word sin comes from the Old English word synn, which was inherited from the Germanic word sunnju (“actuality”) and sunjō (“truth, reality”).
Words of the same linguistic derivation include Gothic sunja (“truth”) and Old Norse syn (“refusal, denial”).

In Norse mythology Syn is a goddess represented as a “sieve” which filters out all impurities.
It is believed that one had to be perfectly pure before they could enter the golden-leaved grove of Glasir, that stands outside the doors of Valhalla (Norse equivalent of heaven) in Asgard (the heavenly dwelling).

By applying some pattern recognition we can conclude that sin is the refusal of truth.

We are living inside of God’s creation.
The most logical way to enforce rules (laws of nature) would be to program them directly into the creation.

What if “judgement” is taking place continuously?
God is omnipresent, omniscient and omnipotent because his creation is programmed to enforce his will.
Every creature is innately programmed with the laws of nature.

Humans have free will to do as they please, however going against the divine laws of nature has consequences.
Humans are the only species which undergo widespread social conditioning training them to go against their senses.
For example, a goat does not ask other animals what it should graze on or for the permission to stay in a specific area.
It simply follows the path of least resistance, as does everything in nature.

Humans are conditioned to go against the idea of least resistance.
It is demonized and seen as laziness.

Since childhood we are taught to work hard and compete in the never-ending race of being better than others.
We are trapped in a cycle of production and consumption, while we are all simply longing to live.

Intuitively all of us know what would make us happy but we choose to lie to ourselves.

We understand that ownership is a social construct but we allow those in control of the system to reap the fruits of our labor.
We know what is truly good for us but we allow ourselves to be brainwashed into believing the contrary.
We are conscious of our desires but we are too afraid to pursue them.

Fundamentally, there is only one sin and it is not being true to oneself.