“Because He [God] is not capricious, He can be known. He can be trusted. His words are a true revelation of Himself, and we need not fear that He will act arbitrarily. Such was good news for the ancient Israelite, and it remains good news for us today.” Table Talk, July 2010

This means, among other things, that as we come to know this God, our character will become more stable, less capricious. This is a good, especially if it is coupled with holiness.