Numbers 8:16-18

Douay-Rheims 1899 American Edition

¹⁶ I have taken them instead of the firstborn that open every womb in Israel,

¹⁷ For all the firstborn of the children of Israel, both of men and of beasts, are mine. From the day that I slew every firstborn in the land of Egypt, have I sanctified them to myself:

¹⁸ And I have taken the Levites for all the firstborn of the children of Israel: