Ahab and Gehazi demonstrated the spirit of greed. In the Bible, Ahab was a king of Israel who was notorious for his love of luxury and material possessions. He coveted the vineyard of a man named Naboth and, with the help of his wife Jezebel, plotted to have him killed so that he could take the vineyard for himself. This demonstrated his greed and willingness to do whatever it took to satisfy his desires.
Similarly, Gehazi was the servant of the prophet Elisha. When Elisha refused to accept a gift from Naaman, a Syrian general whom he had healed of leprosy, Gehazi went behind his back and lied to Naaman, saying that Elisha had changed his mind and wanted the gift after all. Gehazi's actions showed his greed and willingness to deceive for personal gain.
Both Ahab and Gehazi serve as cautionary examples of the dangers of greed and the harm it can cause not only to oneself but also to others.