Gehazi was a servant of the prophet Elisha. He was at first a faithful servant. When Elisha asked Gehazi how he could reward the Shunammite woman who had welcomed him into her home, Gehazi suggested that the childless woman and her husband be given a child. Eventually a son was born to the couple. A few years later the son died. Elisha sent Gehazi to lay his staff upon the corpse in an attempt to perform a miracle and bring the boy back to life. But the boy failed to come back to life, until Elisha himself breathed into his mouth and brought the boy back.
Later on, Gehazi's true nature came out when Elisha cured Naaman the Syrian of leprosy. Elisha refused payment from Naaman for the healing, but Gehazi ran after Naaman to get some money for himself. Gehazi lied to Naaman in saying Elisha sent him to get a talent of silver. Naaman grateful for his healing and believing the lie, gave Gehazi two talents. Because of his greed and lying, Elisha cursed Gehazi with the same disease from which Naaman had been cured "And Gehazi left Elisha, a leper white as snow.".
According to a Rabbinic tradition, the four lepers who found out the Syrians had left their camp - looted the camp, and then told the news to the starving city - were Gehazi and his three sons.
The name Gehazi means "valley of vision."