Gehazi was not a man without opportunities. As a servant of the prophet Elisha, he had the privilege of observing Elisha's life, hearing his message, and witnessing miracles. Gehazi wanted to be just like Elisha except for one thing. He wanted the acclaim for himself, not for God. So Gehazi became discontented with his lot in life and allowed rebellion to grow in his heart.
Gehazi's greed presented itself full-blown when he saw Naaman's treasures, heard Naaman offer them to his master, and heard his master refuse the deserved reward. Gehazi wanted that treasure more than he wanted anything else, and with greed controlling his mind, he went after it.
Every day we train ourselves in one direction or another by the thoughts we think, the words we say, the actions we take, and the deeds we do. We do not fall in a moment; the predisposition to yield to sin has been forming, building, germinating - but not necessarily consciously so. The story of Gehazi proves once again that each person has a choice when presented with the truth of God. Is He real? Does He reward those who seek Him? Or is life without absolutes, filled only with chance, illusion and greed?