Numbers 18:3

So shall they keep thy charge, and the charge of all the tent, - only, unto the vessels of the sanctuary, and unto the altar, shall they not come near, lest they die - both they, and ye.

Numbers 4:15

So shall Aaron and his sons make an end of covering the sanctuary, and all the utensils of the sanctuary, when the camp is to set forward, then after that, shall the sons of Kohath enter to bear it, but they must not put forth a touch unto that which, is holy, else should they die, these, shall be the burden of the sons of Kohath in the tent of meeting.

Numbers 3:25

And, the charge, of the sons of Gershon, was over the tent of meeting, the habitation, and the tent, - the covering thereof, and the screen for the entrance of the tent of meeting;

Numbers 3:31

And their charge, was - the ark and the table and the lampstand and the altars, and the utensils of the sanctuary wherewith they were to minister, - and the screen, as to all the laborious work thereof.

Numbers 3:36

And the oversight of the charge of the sons of Merari, was - the boards of the habitation, and the bars thereof and the pillars thereof and the sockets thereof, - and all the furniture thereof, as to all the laborious work thereof;

Numbers 4:19-20

This, therefore, do ye for them, so shall they live and not die when they approach the most holy place, - Aaron and his sons shall enter and set them man by man over his labour, and unto his burden;

Numbers 16:40

a memorial unto the sons of Israel, That no stranger, who is not of the seed of Aaron, shall draw near to offer incense before Yahweh, - lest he become like Korah and like his assembly, As spake Yahweh by the hand of Moses with regard thereto.

Numbers 1:51

And, when the habitation is to set forward, the Levites shall take it down, and when the habitation is to be pitched, the Levites, shall set it up, but the stranger that draweth near, shall be put to death.

Numbers 18:7

But thou and thy sons with thee, shall keep the charge of your priesthood, as to every matter of the altar and as to the interior of the veil, and shall do the laborious work, as a laborious service of gifts, do I give your priesthood, and, the stranger who cometh near shall be put to death.

Treasury of Scripture Knowledge

Summary

And they shall keep thy charge, and the charge of all the tabernacle: only they shall not come nigh the vessels of the sanctuary and the altar, that neither they, nor ye also, die.

Neither

General references

Bible References

Only they

Numbers 3:25
And, the charge, of the sons of Gershon, was over the tent of meeting, the habitation, and the tent, - the covering thereof, and the screen for the entrance of the tent of meeting;
Numbers 4:19
This, therefore, do ye for them, so shall they live and not die when they approach the most holy place, - Aaron and his sons shall enter and set them man by man over his labour, and unto his burden;
Numbers 16:40
a memorial unto the sons of Israel, That no stranger, who is not of the seed of Aaron, shall draw near to offer incense before Yahweh, - lest he become like Korah and like his assembly, As spake Yahweh by the hand of Moses with regard thereto.

Neither

Numbers 4:15
So shall Aaron and his sons make an end of covering the sanctuary, and all the utensils of the sanctuary, when the camp is to set forward, then after that, shall the sons of Kohath enter to bear it, but they must not put forth a touch unto that which, is holy, else should they die, these, shall be the burden of the sons of Kohath in the tent of meeting.

General references

Hebrews 5:4
And, not unto himself, doth one take the honour, but when called by God, just as, even Aaron: