How can a sinner be declared righteous by God?

According to Scripture, a sinner can be declared righteous by God only through faith in Jesus Christ. This is articulated in Romans 4, which describes how righteousness is credited to those who believe in Him who raised Jesus from the dead. Righteousness is not achieved or earned; it is imputed to those who express faith in Christ's redemptive work. This means that, through faith, we enter into a union with Christ, making His righteousness our own. This is a profound mystery, yet it is true that when God looks at a believer, He sees not their sins but the perfection of Christ’s righteousness attributed to them. This truth reassures us that our standing before God is secured by His grace.