Interesting question.
Lawlessness is transgression of the law (Mosaic Covenant).
There are also the deeds of the flesh.
Galatians 5:19-21
Now the deeds of the flesh are evident, which are: immorality, impurity, sensuality, idolatry, sorcery,
enmities, strife, jealousy, outbursts of anger, disputes, dissensions, factions, envying, drunkenness,
carousing, and things like these, of which I forewarn you, just as I have forewarned you, that those
who practice such things will not inherit the kingdom of God.
Colossians 5:6-9
Therefore consider the members of your earthly body as dead to immorality, impurity, passion,
evil desire, and greed, which amounts to idolatry. For it is because of these things that the wrath
of God will come upon the sons of disobedience, and in them you also once walked, when you
were living in them. But now you also, put them all aside: anger, wrath, malice, slander, and abusive
speech from your mouth. Do not lie to one another, since you laid aside the old self with its evil practices.
2 Timothy 3:1-4
But realize this, that in the last days difficult times will come. For men will be lovers of self,
lovers of money, boastful, arrogant, revilers, disobedient to parents, ungrateful, unholy, unloving,
irreconcilable, malicious gossips, without self-control, brutal, haters of good, treacherous, reckless,
conceited, lovers of pleasure rather than lovers of God, holding to a form of godliness, although
they have denied its power. Avoid such men as these.
We can add the good that you know you should be doing but don't is also sin.
Denial of Jesus is the greatest sin.
Blasphemy of the Holy Spirit cannot be forgiven.
Causing a little one to stumble is a severe sin to commit.
The prophets spoke of laws such as drunkenness.
Witches must be put to death.
Sorcery is a ceremonial law.
Afflicting widows and orphans is also a ceremonial law.
- Caring for the Vulnerable: The prophets (e.g., Isaiah, Jeremiah, Amos) frequently commanded the protection and provision of widows, orphans, and immigrants.
- Social Justice over Sacrifice: Prophets like Micah and Hosea stressed that justice, mercy, and humility are greater than religious sacrifices.
- Internal Righteousness: The prophets spoke of an upcoming inward transformation. Jeremiah and Ezekiel prophesied about a "New Covenant" where God's laws would be written on the hearts of the people, rather than just on stone tablets
The list is near endless so how can anyone define sin or the deeds of the flesh?