How do we know Jesus is our substitute as described in Isaiah?

The prophetic words of Isaiah provide a clear and compelling argument for understanding Jesus as our substitute. In Isaiah 53, it is stated that 'the Lord hath laid on him the iniquity of us all' (Isaiah 53:6). This indicates a transfer of our guilt and sins onto Christ, who willingly endured the punishment that was rightfully ours. The chapter emphasizes not just the suffering of Christ but specifies He acted as our representative—bearing our griefs and carrying our sorrows so that we might be healed. This representative nature confirms that He wasn’t simply an innocent victim but was fulfilling God’s divine plan to save His people through the sacrificial system, culminating in His own life given as a ransom for many.