How does Christ's obedience relate to our salvation?

In Romans 5:19, we see that through Christ's obedience, many are made righteous. This highlights the concept of federal headship, where Christ acts as a representative for humanity. Unlike Adam, whose disobedience led to condemnation, Christ lived a life of perfect obedience, fulfilling the law on our behalf. This is significant because our salvation hinges on Christ's righteousness rather than our own. The gift of grace and justification comes to us because of our union with Christ; His obedience counteracts Adam's disobedience, allowing us to stand justified before God. Thus, our salvation is entirely grounded in the completed work of Christ.