How do we know Christ's death is the method of grace?

Christ's death serves as the method of grace because it satisfies God's dual nature of justice and mercy. In 2 Corinthians 5:21, we read that 'God made him who had no sin to be sin for us, so that in him we might become the righteousness of God.' This transaction reflects how Jesus took upon Himself the punishment due for our sins, allowing us to be seen as righteous before God. His perfect, sinless life, coupled with His sacrificial death, fulfills the requirements of divine justice while simultaneously demonstrating God's grace toward us.