Why is Christ's substitutionary sacrifice significant for believers?

The significance of Christ's substitutionary sacrifice cannot be overstated. In John 18:8, when Jesus commands, 'let these go their way,' He demonstrates His role as the substitute, bearing the punishment that was due to His followers. This act frees believers from the condemnation of sin, showing His active agency in our salvation. 2 Corinthians 5:21 reinforces this, teaching that He became sin for us so that we might become the righteousness of God in Him. It highlights that salvation is entirely by grace and reliant on Christ's work on our behalf.