Here is an unusual take…Sin is…less than sustainable goodness.
“Virtus” or Virtue comes from the Latin word for power. All virtues are in fact a kind of power. Now, God has perfectly ordered virtue that sustains Him eternally. When God chose to act out His virtues…He Mercifully allowed the limited good to come into existence.
Is sin, therefore limited good? No, God is good…but God knew we would wander into sin…and become unsustainable…which God refers to as “death”.
Now, what makes a good sustainable…? Unity with ALL good…proper order…a home is found for a limited good within all goodness…In our case…God has a home for us within His infinite Mercy.
On the other hand, a limited good becomes unsustainable by being cut-off from the source of life–Christ Jesus, God, Mercy, etc.