Most commentators, including Calvin and Spurgeon, see this as a continuation of the theme of purging false prophecy. In a future day of revival, a former false prophet is so ashamed of his past that when questioned about marks on his hands (from idolatry or punishment), he gives an evasive answer. He attributes the wounds to his family or "friends" to avoid admitting his shameful past, showing how detestable false teaching will become.