No one is without sin. And right living doesn’t necessarily produce right believing, as many people do good things but they also deny Jesus. Again:
‘For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast.’ (Ephesians 2:8-9)
But right believing will produce right living.
As I wrote someplace earlier, some common sins we commit often against God are lying, cheating, stealing, adultery, fornication… here are some others:
‘Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, envy, murders, drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practice such things will not inherit the kingdom of God.’ (Galatians 5:19-21)
We could probably add some more that are specific to our lives.
Anyone who has not received Jesus is still guilty no matter how good they think they are now. But when we do receive Him, we are forgiven and our sins are forgotten.
‘Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new.’ (2 Corinthians 5:17)