One thing, and only one thing, is necessary for Christian life, righteousness and freedom. That one thing is the most Holy Word of God (see John 11:25; John 8:36; Matthew 4:4). Let us then consider it certain and firmly established that the soul can do without anything except the Word of God and that where the Word of God is missing there is no help at all for the soul.
Martin Luther, from Treasury of Daily Prayer, page 220
