Catechesis: Large Catechism, Shorter Preface

When these parts have been well learned, you may assign them also some Psalms or some hymns based on these subjects, to supplement and confirm their knowledge. Thus our youth will be led into the Scriptures so that they make progress daily.—LC Pref. 25

However, it is not enough for them simply to learn and repeat these parts verbatim. The young people should also attend preaching, especially at the time designated for the Catechism*, so that they may hear it explained and may learn the meaning of every part.—LC Pref. 26

*In Wittenberg, the Catechism was preached through four times a year, associated with the ancient Ember Days.