one who is self-sufficient, inexhaustible, and utterly unchanged by time, we will lack nothing. He is sufficient for all things and will provide for us. What is it that those in the care of the good shepherd shall not lack? Verses 2–6 are an answer to that question. This is because “He makes me lie down in green pastures, he leads me beside quiet waters” (v. 2). Phillip Keller is a pastor and author who for eight years was himself a shepherd. Out of that experience he has written