Why is the authority of Christ essential for salvation?

The authority of Christ is central to the Gospel and essential for salvation because He alone holds the power to forgive sins and declare us righteous. In Luke 18:13-14, Jesus illustrates that only He can justify the sinner, as He declared, 'This man went down to his house justified.' His authority is rooted in His divine nature and His completed work on the cross, where He proclaimed, 'It is finished.' This signifies that the debt of sin was paid in full under His authority. Without recognizing His absolute authority, there is no hope for redemption or assurance of salvation, as He is the sole mediator between God and man.