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but thus do to them, that they may live, and not die, when they approach to the most holy things: Aaron and his sons shall go in, and appoint them everyone to his service and to his burden;
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but they shall not go in to see the sanctuary even for a moment, lest they die."
21
Yahweh spoke to Moses, saying,
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"Take a census of the sons of Gershon also, by their fathers' houses, by their families;
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from thirty years old and upward until fifty years old shall you number them; all who enter in to wait on the service, to do the work in the Tent of Meeting.