The concept of "Sin" changes dramatically depending on whether we look at it through the lens of religion, philosophy or psychology.
At its core, Sin is defined as a violation of a moral, spiritual or ethical code.
I would categorize sins and tank them based on how deeply they violate the autonomy of others and oneself. I would scale it in the order of external destruction to internal decay.
The ultimate violation
Murder is the absolute top sin. It is the ultimate, irreversible sin because it completely eliminates the other person's existence and future.
Physical and Sexual violence are the next, while the victim survives, their bodily autonomy and sense of safety are deeply violated, leaving permanent trauma.
The manipulation matrix (Abuse of Trust, Theft, Psychological/Verbal/Financial abuse)
Invisible Harm: People can be systematically destroyed without physical weapons by greed, verbal, theft/robbery, financial and psychological abuse and violation of trust. The invisible harm caused by lying, manipulating, cheating, financial abuse deliberately creating scenarios to cause extreme distress to others. Gaslighting and psychological warfare can hollow out a person's sanity.
Betrayal Factor: Abusing trust weaponizes a person's vulnerability against them. It is an insidious form of harm because it forces the victim to question their own judgement. The betrayal trauma is very real and not only does a person suffer the consequences from the betrayal but also are unable to move forward because of the trauma.
Sins of Self destruction (Vices like Gluttony, Drugs, Alcohol addiction)
Traditional religious system often treat drugs, alcohol, sexual over indulgence as massive crimes against a deity. They are in fact tragedies of self destruction. They are harmful because they burn down the user's own life, mind, health and potential. Unless these vices bleed into harming others, they are tragedies and battles of self destruction and personal vices not crimes or malice against society.
Sins of the mind (Pride, Envy, Jealousy, Sloth, Greed (Avarice), Wrath (Anger))
The sins of the mind such as pride, envy, jealousy are at the bottom as long as they stay locked in a person's mind. Traditional frameworks like the seven deadly sins/ Capital vices (popularized by Dante's Inferno) are not specific actions but rather seven root behaviors and psychological traps that lead to other immoral deeds.
Pride: An excessive, inflated belief in one's own abilities and lack of humility.
Greed (Avarice): An intense, insatiable desire for wealth, power and material possessions.
Lust: An intense, uncontrolled sexual desire or objectification of others.
Envy: A deep resentment and jealousy towards the traits, status or possessions of someone else.
Gluttony: Over indulgence and over consumption of anything to the point of waste.
Wrath: Uncontrolled, self destructive anger and a desire for vengeance.
Sloth: Spiritual, mental or physical laziness, a refusal to act or care about your responsibilities.
If someone is sitting quietly in their homes feeling incredibly arrogant, jealous, bitter, angry etc, they are not hurting anyone but themselves. Those thoughts only become a true crime when they motivate someone to cross the line into harming others.
It is important that while following the law in both letter and in spirit, we don't just accept the legal and traditional structures of what is "right" or "fair" but use logic and empathy and a strong code of personal ethics to live our lives.