Because I am a Christian, therefore, every day in which I do not penetrate more deeply into the knowledge of God's Word in Holy Scripture is a lost day for me. I can only move forward with certainty upon the firm ground of the Word of God. And, as a Christian, I learn to know the Holy Scriptures in no other way than by hearing the Word preached and by prayerful meditation.

—Dietrich Bonhoeffer (1906–1945)