I just thought I might attempt to add one more thing, this is how I see humanity to do with sin.
We are spirit, soul and body.
Spirit: The life breathed into us by God
Soul: Our thoughts and emotions
Body: Our physical parts
SPIRIT
Our spirit is dead to the things of God until we turn back to Him. When we repent and give our lives back to God He connects us with His Holy Spirit. Our dead human spirit "comes alive" by His Holy Spirit. Like a globe recieving electricity with the globe being our human spirit and the electricity being the Holy Spirit. Our human spirit will remain with us forever, it has no sin in it after accepting Jesus. It is either dying or living.
SOUL
Our soul is full of sinful habits. Our mind is full of bad motives and weird responses. Our soul (mind and emotions) is being cleaned up by the Holy Spirit which lives inside us. But our soul will never fully be cleansed, it will always have things to be fixed up by the Spirit which lives in us.
BODY
Well our physical body is iredeemable. It is going to perish no matter what. However the point is, we live out the things which our soul tells us too. So the Spirit feeds the soul and the soul causes our body to act. Our human spirit is perfect, filled with the Holy Spirit, in Jesus. Our soul is filled with sin but is being sanctified, cleansed, corrected, conformed.
So I can then say, the Christian is a sinner, though he will live forever. The athiest is a sinner also, but unless he admits his need for the Spirit to bring his spirit alive, he will not live forever. Thus, we are all evil/sinners. But the Christian is being conformed to the image of Christ. The Christian has the Holy Spirit helping their souls to become "better". The athiest attempts to become better in their own strength. Or else cares not.
There may be some conatations you have with soul or spirit which may cause what I've written to seem wrong, and I admit the soul and spirit are very closely linked-- almost so much so that seperating them like I have could be considered wrong
I just find it easier to think about things this way and when I read the Bible it seems to make sense.
May God open our eyes to who He is, and who we are.
And now I pray God's blessing over everyone! Christian and athiest! May God convict all our hearts of our need for Him! May He allow us all to experience real and pure love. Indeed indeed, amen.
Jonathan