How do we know justification is real?

Justification is the act by which God declares sinners righteous on account of Christ’s righteousness. Romans 8:33 confirms that it is God who justifies, emphasizing the divine authority behind this legal declaration. The believer, though struggling with the reality of sin in their own life, can rest assured in their justification because it is based not on their works, but on Christ's finished work. This truth assures Christians that their standing before God is secure, reinforcing the importance of faith in Christ as their mediator and righteousness.