Heidelberg Catechism, Lord's Day 33

Lord's Day 33 of the Heidelberg Catechism presents the Reformed understanding of justification and sanctification through question-and-answer format, emphasizing how believers are declared righteous by faith in Christ alone and progressively made holy by the Holy Spirit. This foundational catechetical text serves as both doctrinal instruction and practical guide for Christian living, making it essential for understanding the catechism's integrated treatment of salvation and holiness.