Psalm 1:3–4 says that the person who meditates on God’s word “is like a tree planted by streams of water that yields its fruit in its season, and its leaf does not wither. In all that he does, he prospers. The wicked are not so, but are like chaff that the wind drives away.”

Who would not delight to read a book, the reading of which would change one from useless chaff to a mighty cedar of Lebanon, from a Texas dust bowl to a Hawaiian orchard? Nobody deep down wants to be chaff — rootless, weightless, useless. All of us want to draw strength from some deep river of reality and become fruitful, useful people.

That river of reality is the word of God, and all the great saints have been made great by it. —John Piper