Numbers 8:16-18 Common English Bible (CEB)
16 They are given over to me from the Israelites in place of all the newborn, the oldest of all the Israelites. I take them for myself. 17 Every oldest male among the Israelites is mine, whether human or animal. When I killed all the oldest males in the land of Egypt, I dedicated them to myself. 18 I have taken the Levites in place of all the oldest among the Israelites.