Who really cares of the minimal ‘worth’ of works or deeds?
The ‘cost’ of sin, even one, was the life and suffering and death of Jesus. Too enormous to begin to comprehend.
The folks I would present this argument to don’t think they need Jesus, but can do it on their own.
I’m trying to show them the futility and the eternal risk with that and get them to the point where they will cry out for mercy to the Lord, because there is no other way.