In the story of Ahab and Naboth's vineyard in the Bible, Ahab was the king of Israel who desired Naboth's vineyard for his own personal use. When Naboth refused to sell his inheritance, Ahab became angry and depressed. This exposed his envy and disregard for the law, as he was willing to break God's law in order to get what he wanted. This ultimately led to his downfall and punishment by God.