Numbers 8:17-19

17For all the first-born among the children of IsraelH3478 are mine, both manH120 and beast: on the dayH3117 that I smote all the first-born in the landH776 of EgyptH4714 I sanctifiedH6942 them for myself. 18And I have takenH3947 the LevitesH3881 instead of all the first-born among the children of IsraelH3478. 19And I have givenH5414 the LevitesH3881 as a gift to AaronH175 and to his sonsH1121 from among the children of IsraelH3478, to do the serviceH5656 of the children of IsraelH3478 in the tentH168 of meetingH4150, and to makeH5414 atonementH3722 for the children of IsraelH3478; that there beH1961 no plagueH5063 among the children of IsraelH3478, when the children of IsraelH3478 come nigh unto the sanctuaryH6944.