Psalm 23 is probably the most popular of all the psalms. It is a hymn of God's goodness to his people. God is first portrayed as a shepherd, and then as a king. This psalm has been a source of comfort and encouragement to millions of believers over the years, and today it is as fresh and appropriate as when David first wrote it.
Jesus may have been thinking of these or other psalms when he said of himself, "I am the good shepherd." A shepherd cares for his sheep and meets all their needs. He guides them to green pastures with quiet waters – symbols of health and freshness. But when God is the Shepherd, he will do much more than this!