Numbers 3:10-13

And thou shalt appoint
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Aaron
<0175>

and his sons
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and they shall wait on
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their priest's office
<03550>_:

and the stranger
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that cometh nigh
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shall be put to death
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And the LORD
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spake
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unto Moses
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saying
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And I, behold, I have taken
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the Levites
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from among
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the children
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of Israel
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instead of all the firstborn
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that openeth
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the matrix
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among the children
<01121>

of Israel
<03478>_:

therefore the Levites
<03881>

shall be mine;

Because all the firstborn
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[are] mine; [for] on the day
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that I smote
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all the firstborn
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in the land
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of Egypt
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I hallowed
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unto me all the firstborn
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in Israel
<03478>_,

both man
<0120>

and beast
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mine shall they be: I [am] the LORD
<03068>_.