Numbers 3:11-13

11And Jehovah spokeH1696 to MosesH4872, sayingH559,

12And I, behold, I have takenH3947 the LevitesH3881 from among the children of IsraelH3478 instead of every firstbornH1060 that breaketh open the wombH7358 among the children of IsraelH3478, and the LevitesH3881 shall beH1961 mine;

13for every firstbornH1060 is mine. On the dayH3117 that I smote all the firstbornH1060 in the landH776 of EgyptH4714, I hallowed unto me all the firstbornH1060 in IsraelH3478, both of manH120 and beast; mine shall they beH1961: I am Jehovah.