What is the role of Christ in our assurance?

Jesus Christ is central to our assurance as He is our righteousness. As 2 Corinthians 5:21 states, 'For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.' Our assurance does not depend on our own righteousness, which is deemed 'filthy rags' (Isaiah 64:6), but exclusively on Christ's righteousness. This profound truth underscores that our standing before God is secure, not because of our works, but because of what Christ has accomplished for us through His death and resurrection.