How do we know Christ kept the law perfectly?

The biblical assertion that Christ kept the law perfectly is foundational to sovereign grace theology. As our representative, Jesus lived a sinless life, fully obeying the law that we could not keep. This is evidenced throughout the New Testament, where Jesus demonstrates His fulfillment of the law in both moral and ceremonial aspects. Moreover, Romans 5 teaches that believers are justified through Christ’s obedience, meaning that His righteousness is imputed to them. Thus, for those who trust in Him, they are regarded as having perfectly kept God’s law through Christ’s accomplished work.