How do we know that Christ is our representative for redemption?

The Bible teaches that Christ is the last Adam, who came to redeem a sinful people chosen by God before the foundation of the world (Ephesians 1:4-5). Through His life, death, and resurrection, Jesus satisfied God's justice and accomplished our redemption. His role as the mediator between God and humanity assures us that our salvation is secure and complete, as He bore our sins and offered His life as a ransom for many. This theological truth offers believers immense comfort, knowing that nothing can be added to the perfect work of Christ.