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Kindly share with a Mormon the message in today’s reference can’t be true because the Nephites wouldn’t have known what a church was in 600 BC. They wouldn’t have known what being a Catholic or Protestant was either, which is what this passage was referring to.
For a quick history lesson on the origins of Catholicism see GotQuestions.org. They also have info on the origins of the Protestant Reformation. Both resources are great when explaining the history of Christianity.
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1 Nephi 14:10 “And he said unto me: Behold there are save two churches only; the one is the church of the Lamb of God, and the other is the church of the devil; wherefore, whoso belongeth not to the church of the Lamb of God belongeth to that great church, which is the mother of abominations; and she is the whore of all the earth.”