Exodus 13:2 Ex. 13:2
Sanctify unto me all the firstborn, whatsoever openeth the womb among the children of Israel, both of man and of beast: it is mine.
Numbers 8:16-18 Num. 8:16-18
16 For they are wholly given unto me from among the children of Israel; instead of such as open every womb, even instead of the firstborn of all the children of Israel, have I taken them unto me. 17 For all the firstborn of the children of Israel are mine, both man and beast: on the day that I smote every firstborn in the land of Egypt I sanctified them for myself. 18 And I have taken the Levites for all the firstborn of the children of Israel.
(Parallel)