Numbers 8:14-16  Tree of Life Version

¹⁴ In this way you are to set apart the Levites from Bnei-Yisrael to be Mine. ¹⁵ After you have purified them and presented them as a wave offering, the Levites will come to do their work at the Tent of Meeting. ¹⁶ For they are the ones from among Bnei-Yisrael given to Me in place of all the first from the wombs of Bnei-Yisrael. I have taken them for Myself.