"I, too, am a theologian who has attained a fairly good practical
knowledge and experience of Holy Scriptures through various
dangers. But I do not so glory in this gift as not to join my
children daily in prayerfully reciting the Catechism, that is, the
Ten Commandments, the Creed, and the Lord's Prayer and meditating on
them with an attentive heart. I do not merely pass over the words
hurriedly, but I carefully observe what the individual word means…
For God gave the Word that we should impress it on ourselves as
Moses says (Deut 6.7), and practice it. Without this practice our
souls become rusty, as it were, and we lose ourselves. (from
Luther's exposition of Psalm 126.)"
What Luther Says, Luther on the Small Catechism