What is justification? Our Catechism provides an excellent answer: "Justification is an act of God's free grace, wherein he pardoneth all our sins, and accepteth us as righteous in his sight, only for the righteousness of Christ imputed to us, and received by faith alone" (WSC, #33). Justification is God's judicial act. In it, He declares two things about us: 1) that we are pardoned (based on Christ's sacrifice for our sins); 2) that we are accepted as righteous in His sight (only for the perfect righteousness of Jesus Christ, who lived a life of perfect obedience to God on our behalf). This grace is not for everyone: it is only for those who put their faith in Jesus Christ and what He has done for them. God imputes, or credits, Christ's righteousness to them. This grace of justification we receive by faith alone.