Exodus 19:25
So Moses went down to the people, and told them.
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Exodus 19:22
Let the priests also, who come near to Yahweh, sanctify themselves, lest Yahweh break out on them.”
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Exodus 19:23
Moses said to Yahweh, “The people can’t come up to Mount Sinai, for you warned us, saying, ‘Set bounds around the mountain, and sanctify it.’ ”
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