Numbers 3:10-12

Modern English Version

¹⁰ You will appoint Aaron and his sons, and they will attend to their priesthood, and the foreigner that approaches will be put to death.

¹¹ The Lord spoke to Moses, saying: ¹² I Myself have taken the Levites from among the children of Israel instead of all the firstborn that open the womb among the children of Israel. Therefore the Levites will be Mine