Numbers 8:14-16

Amplified Bible, Classic Edition

¹⁴ Thus you shall separate the Levites from among the Israelites, and the Levites shall be Mine [in a very special sense].

¹⁵ And after that the Levites shall go in to do service at the Tent of Meeting, when you have cleansed them and offered them as a wave offering.

¹⁶ For they are wholly given to Me from among the Israelites; instead of all who open the womb, the firstborn of all the Israelites, I have taken the Levites for Myself.