As a prominent catechism in reformed churches, the Heidelberg Catechism is one of only a few that have gained wide acceptance throughout Christendom and whose profitableness has not waned with the passage of time. This course looks at the figures involved in the writing of the Heidelberg Catechism, the historical context in which it was written and its structure. Finally, the course will delve into the substance of the catechism and its usefulness in laying a solid foundation for the Christian life.