Paul is addressing a fundamental issue in the early Christian community: the relationship between the law and grace. He insists that God's grace is central to salvation and righteousness. If following the law could make someone righteous, then Christ's death would be meaningless. This statement underscores the belief that salvation is not something humans can achieve on their own; it is a gift from God through faith in Jesus Christ.
Paul's message is a reminder that human efforts, no matter how diligent, cannot replace the grace that God offers through Jesus. This grace is transformative, allowing believers to live in a new relationship with God, free from the constraints of trying to earn their way into heaven. It also serves as a call to focus on faith and trust in God's promises rather than relying solely on human actions. This teaching is foundational for understanding the Christian doctrine of justification by faith, which is a cornerstone of many Christian denominations.