What Is Justification?
God's declaration that a sinner is made right, or acquitted, before him on the basis of faith in Jesus Christ.
Meaning
Justification is a legal, courtroom term in the Greek, dikaioo, meaning to declare righteous or acquit. Paul uses it throughout Romans and Galatians to describe how a person moves from guilty before God to right standing with him, not by earning it through good deeds, but through faith in Christ's finished work.
Romans 5:1 states that believers, having been justified by faith, have peace with God. Paul roots this teaching in Abraham, who was credited righteousness because he believed God, before the law of Moses even existed, arguing that justification has always operated by faith rather than performance.
This doctrine became a major point of difference among Christian traditions during the Protestant Reformation. Martin Luther and the Reformers taught justification by faith alone, sola fide, a legal declaration made once, at the moment of faith, entirely apart from human merit, distinct from the lifelong process of sanctification. Catholic teaching affirms justification comes through grace received by faith, but describes it as also involving the actual infusion of righteousness in the believer, connected to baptism and worked out through a life of grace-empowered cooperation. Eastern Orthodox theology tends to use less legal language altogether, framing the Christian life more in terms of healing and union with God than a courtroom verdict. Each tradition affirms grace as the source, while differing on how justification relates to ongoing transformation.
In Scripture
Romans 5:1“Being therefore justified by faith, we have peace with God through our Lord Jesus Christ;”
Explore more terms in the Christian glossary, see how the traditions understand it on the denominations guide, or read related verses explained.
Justification: Frequently Asked
What does it mean to be justified before God?
It means being declared right, or acquitted, in God's sight, a legal term borrowed from the courtroom. Scripture teaches this happens through faith in Christ rather than through good works, resolving the guilt of sin so a person stands at peace with God.
Why did justification become a point of division among Christians?
During the Reformation, Martin Luther argued justification is a one-time legal declaration by faith alone, separate from the ongoing process of becoming holy. Catholic teaching held that justification also involves an actual infusion of righteousness worked out through grace, sacraments, and cooperation.
Is justification something a person earns?
No. Every major Christian tradition agrees justification flows from God's grace, not human merit or good works. Traditions differ on the mechanism and its relationship to sanctification, but all reject the idea that a person can earn right standing with God on their own.