Why I Still Defend the Doctrine of Imputation | Parchment and Pen. I’m very much a believer in the doctrine of imputed sin (that the guilt of Adam’s sin is imputed, charged to, the entire human race – that we all sinned in Adam), as that doctrine appears in Romans 5. We were in the loins of Adam when Adam sinned. Therefore, his sin is our sin and it is the guilt of his sin and the effect of his sin that renders all of us – from the moment of conception – sinners. Sin is, in effect, part of our DNA.