Heidelberg Catechism, Lord's Day 13

Lord's Day 13 of the Heidelberg Catechism addresses the believer's gratitude and sanctification as a response to Christ's redemptive work, emphasizing the practical Christian life that flows from justification. This confessional catechism excerpt is foundational material for Reformed Christian education and discipleship, presenting essential doctrine in question-and-answer form designed for instruction and personal devotion.