Jezebel was the wife of King Ahab and the daughter of Ethbaal, king of the Sidonians. She was a very evil woman who brought the worship of the pagan god Baal into the northern kingdom of Israel. She also instigated the death of Naboth the Jezreelite so that her husband would take over his vineyard. As fulfillment of prophecy, Jezebel met her inglorious end when Jehu son of Jehoshaphat had two of her servants throw her down and she was trampled underfoot, and then later dogs came and ate most of her body.
Jesus in his letter to the Thyatiran church in Revelation chapter 2 used the name Jezebel as an epithet for a false prophetess that they have allowed to seduce His servants into committing idolatry and fornication. Saying that He has given her time to repent and she refused, He says He will cast her into a bed, and those that commit adultery with her into great tribulation unless they repent of their deeds, and He will also strike her children dead so that people will know He searches hearts and minds and will repay everyone according to their deeds.