Learning Justification
a Lifetime Lesson

There are few of us who know and understand this article, and I treat it again and again because I greatly fear that after we have laid our head to rest, it will soon be forgotten and will again disappear....  And indeed we cannot grasp or exhaust Christ, the eternal Righteousness, with one sermon or thought; for to learn to appreciate Him is an everlasting lesson which we shall not be able to finish either in this or in the yonder life.  

Source: Quoted in Ewald M. Plass, What Luther Says, A Practical In-home Theology for the Active Christian. St. Louis: Concordia Publishing House. 1959 Edition, 10th Printing (1994), pp. 714-715.