Exodus 30:21
And they will wash their hands and their feet so that they do not die, and it will be a lasting rule for them--to him and to his offspring throughout their generations.
Exodus 28:43
And they will be on Aaron and on his sons when they come to the tent of assembly or when they approach the altar to serve in the sanctuary, so that they will not bear guilt and die. [It is] a lasting statute for him and for his offspring after him.
Exodus 27:21
In the tent of assembly outside the curtain that [is] before the testimony, Aaron and his sons will arrange it, from evening until morning, before Yahweh [as] a lasting statute throughout their generations from the {Israelites}.