In this article, Zacharias Ursinus exposits and expands question and answer 19 of the
Heidelberg Catechism, of which he was the primary author. In greater detail, he defines
the term “gospel” and what Christians mean when they speak of the Gospel. As a further
supplement, he describes the history of the Gospel as a doctrine, and what part the Gospel
plays in the life of the church. Concerning church practice, he outlines how the Gospel
differs from the Law, the stated rules and standards of the faith. Along with plenty of
scripture references, he includes brief discussions of several Greek words relevant to both
scripture and the Catechism itself.