Numbers 18:1-3

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  1 H3068 And the LORD H559 [H8799] said H175 to Aaron, H1121 Thou and thy sons H1 and thy father's H1004 house H5375 [H8799] with thee shall bear H5771 the perversity H4720 of the sanctuary: H1121 and thou and thy sons H5375 [H8799] with thee shall bear H5771 the perversity H3550 of your priesthood.
  2 H251 And thy brethren H4294 also of the tribe H3878 of Levi, H7626 the tribe H1 of thy father, H7126 [H8685] bring H3867 [H8735] thou with thee, that they may be joined H8334 [H8762] to thee, and minister H1121 to thee: but thou and thy sons H6440 with thee shall minister at the face of H168 the tent H5715 of witness.
  3 H8104 [H8804] And they shall keep H4931 thy charge, H4931 and the charge H168 of all the tent: H7126 [H8799] only they shall not come near H3627 the vessels H6944 of the sanctuary H4196 and the altar, H4191 [H8799] that neither they, nor ye also, die.