CAB(i)
16 For these are given to Me for a present out of the midst of the children of Israel: I have taken them to Myself instead of all the firstborn of the sons of Israel that open every womb.
17 For every firstborn among the children of Israel is Mine, whether of man or beast: in the day in which I struck every firstborn in the land of Egypt, I sanctified them to Myself.
18 And I took the Levites in the place of every firstborn among the children of Israel.
19 And I gave the Levites presented as a gift to Aaron and his sons out of the midst of the children of Israel, to do the service of the children of Israel in the tabernacle of witness, and to make atonement for the children of Israel; thus there shall be none among the sons of Israel to draw near to the holy things.