These passages shown how important it is to have godly advisers and how a good leader is one who is faithful to God and help grow others with God's values.
It is interesting to read about the different kings and their leadership styles. It is important that when we seek advice we must carefully weigh the advice we receive. King Ahab chose to have advisers that would only tell him what he wanted to hear. By not following God, King Ahab perished in battle just as he was told.
In 2 Chronicles 19, when King Jehoshaphat appointed judges he reminded them that they were accountable to God for the standards to use to judge others. In my Life Application Bible it said that "Jehoshaphat's advice is helpful for all leaders (1) realize you are judging for God (2) be impartial and honest (3) be faithful (4) act only out of fear of God not men, God holds us accountable for the authority we exercise.