The Pastor Hacks blog presents what IMO is the correct understanding of sin and sinner.
The word sinner is a theological designation. It is essential to insist on this. It is not a moralistic judgement. It is not a word that places humans somewhere along a continuum ranging from angel to ape, assessing them as relatively 'good' or 'bad.' It designates humans in relation to God and sees them as separated from God. Sinner means something is awry between humans and God. In that state people may be wicked, unhappy anxious, and poor. Or, they may be virtuous, happy and affluent. Those items are not part of the judgment. The theological fact is that humans are not close to God and are not serving God.
You can read the rest of his post a the link below.
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