Numbers 8:14-16

New King James Version

¹⁴ Thus you shall ^(A)separate the Levites from among the children of Israel, and the Levites shall be ^(B)Mine. ¹⁵ After that the Levites shall go in to service the tabernacle of meeting. So you shall cleanse them and ^(C)offer them like a wave offering. ¹⁶ For they are ^(D)wholly given to Me from among the children of Israel; I have taken them for Myself ^(E)instead of all who open the womb, the firstborn of all the children of Israel.