Why is understanding the nature of Christ important for salvation?

The nature of Christ is critical for salvation because He must be both fully God and fully man to act as a perfect mediator between God and humanity. If He were merely a man, He would be unable to bear the infinite weight of our sins; conversely, if He were only God, He could not sufficiently identify with human suffering. This is articulated in Hebrews 4:15, highlighting that He was 'in all points tempted like as we are, yet without sin.' His dual nature allows Him to fulfill the requirements of the law on our behalf and to offer Himself as the righteous sacrifice needed to atone for our sins. Thus, comprehending who Christ is strengthens our faith and assurance in the salvation He offers.