I always assumed that lyric was from the standpoint of having been washed clean so that no sin existed. If you have the imputed righteousness of Jesus then in one sense you have no sin, thus there is no condemnation. But in another sense we have all sinned which is why we need Jesus.
But I have read that he is Jewish and I hope he realizes the truth that he put in his song, that he needs a relationship with Jesus.
I see what you mean. I think I just don’t trust it because I know and understand the music industry. My understanding of our sinful condition is that we’re not entirely “clean” until we’re rid of the flesh. I also hope he understands the points you made.