David did good to Saul and could reasonably expect good in return. Indeed, Saul invited him to go back to Gibeah. However, David did not think that Saul would keep his word, and so he stated that he put his trust in the Lord to protect him,1 rather than in any transformation on Saul’s part.
24 Behold, as your life was precious this day in my sight, so may my life be precious in the sight of the LORD, and may he deliver me out of all tribulation.”