While David was far from perfect, he spent his entire life trying to be someone who was worthy of being called a man after God’s own heart. Some people would think it is enough to be of good character and to have integrity to keep them from harm. The problem is neither of those things provide protection from the evil on this earth. The only thing it provides protection against is from having a bad relationship with God. This is the most important thing we could work towards anyway. Just be mindful that God cares more about our well being than we can imagine; He is there for us even in death.