Heidelberg Catechism, Lord's Day 23

Lord's Day 23 of the Heidelberg Catechism addresses the believer's righteousness and sanctification, teaching how we are declared righteous through faith in Christ alone and then progressively made holy by the work of the Spirit. This catechism question and answer serves as instructional material for understanding the forensic declaration of justification and the ongoing process of Christian growth, making it essential for catechetical instruction in the Reformed tradition.