Why is the concept of being both sinner and saint important for Christians?

The dual identity of being a sinner and a saint is foundational to the Christian faith as it encapsulates the believer's experience of grace. In Romans 7, Paul acknowledges his struggles with sin even as a follower of Christ, declaring, 'O wretched man that I am! Who will deliver me from this body of death?' (Romans 7:24). This recognition reflects that while believers have been justified and declared righteous in Christ, they still contend with their sinful nature. It is crucial for Christians to understand this ongoing battle as it deepens their reliance on Christ's finished work and His continuous grace. This truth fosters humility and a deeper appreciation of the atonement as they navigate their struggle against sin.