Numbers 8:14-16

Darby(i) 14 And thou shalt separate the Levites from among the children of Israel, that the Levites may be mine. 15 And afterwards shall the Levites come in to do the service of the tent of meeting. And thou shalt cleanse them, and offer them as a wave-offering. 16 For they are wholly given unto me from among the children of Israel; instead of every one that breaketh open the womb, instead of every firstborn among the children of Israel, have I taken them unto me.