Q: At confirmation, just before he says the confirmation prayer, why does the bishop remove his miter before addressing the people? Shouldn’t he have it on while talking to the people, and off while talking to God?
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A: I’m not sure why, but that is what paragraph 464 says in the Ceremonial of Bishops. The bishop removes his miter before addressing the people, and it remains off while he addresses God. It mimics the opening rites, where he leaves the miter off until after the collect, then puts it on for the readings.