Suppose everyone in your worship service started speaking unknown languages, and some outsiders or some unbelievers come in. Won't they think you are mad?
Israel, the time has come. You will get what you deserve, and you will know it. “Prophets are fools,” you say. “And God's messengers are mad.” Your terrible guilt has filled you with hatred.
If that happens, the master will come on a day and at a time when the servant least expects him. That servant will then be punished and thrown out with the servants who cannot be trusted.