Psalm 23 is a deeply moving Psalm.  We memorize it because we recognize that this is not just poetry or right theology; this was David’s authentic confession and testimony of God as his personal Good Shepherd. The Good Shepherd who led him through green pastures and quiet waters.  Perhaps you have experienced good times like these.  When the business or promotion comes through.  When you find money to send your child to school.  These are times of blessing and everything is working in your favor.