I this article the explication of the Ten Commandments according to the Heidelberg Catechism is analysed. The Heidelberg Catechism indicates the following characteristics: Adherence to the Ten Commandments indicates gratitude. The Ten Commandments are synecdochaic in character. The Ten Commandments are explicated in the context of revelation history. The emphasis is placed on inner conviction. The negative as well as the positive vocation of the Christian is emphasized. The universal significance of the Decalogue is acknowledged. The practical implications of the Ten Commandments are indicated. The authority of the Ten Commandments is considered as absolute. The demands of the Decalogue express a personal character. The Roman Catholic and Lutheran divisions of the Ten Commandments are rejected. Biblicism is rejected. Perfectionism is rejected.