Why is Christ's work important for salvation?

The importance of Christ's work for salvation cannot be overstated. In Romans 5:19, we read, 'For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.' This indicates that it is through Christ's perfect obedience that we are declared righteous, not through our own works. His sacrificial death fulfilled the righteous requirements of the Law, providing us with a fullness of salvation that cannot be obtained through human effort. Thus, our salvation is grounded in His work alone, and any attempt to supplement it with our own efforts undermines its efficacy.