What is the classic Reformed perspective on the doctrine of sin? This article shows from the vantage point of the cross how absurd sin is, as deliberate transgression against God. Sin is both an act and a condition. The article nuances this, explaining that we need to distinguish between cases of evil intent, deliberate hardening, or error and ignorance.
How does God make us aware of our sin? This article explains that we come to know our sin through the law, which Christ holds up as a mirror before us. It also explains the relationship between law and gospel.