Numbers 3:10-13 And thou shalt appoint Aaron and his sons, and they shall wait on their priest's office: and the stranger that cometh nigh shall be put to death.

Webster⁽ⁱ⁾ ¹⁰ And thou shalt appoint Aaron and his sons, and they shall wait on their priest's office: and the stranger that cometh nigh shall be put to death. ¹¹ And the LORD spoke to Moses, saying, ¹² And I, behold, I have taken the Levites from among the children of Israel, instead of all the first-born that openeth the matrix among the children of Israel: therefore the Levites shall be mine; ¹³ Because all the first-born are mine; for on the day that I smote all the first-born in the land of Egypt, I hallowed to me all the first-born in Israel, both man and beast: mine they shall be: I am the LORD.