Numbers 3:12-15

Living Bible

^11-12 And the Lord said to Moses, “I have accepted the Levites in substitution for all the oldest sons of the people of Israel. The Levites are mine ¹³ in exchange for all the oldest sons. From the day I killed all the oldest sons of the Egyptians, I took for myself all the firstborn in Israel of both men and animals! They are mine; I am Jehovah.”

^14-15 The Lord now spoke again to Moses at the Sinai peninsula, telling him, “Take a census of the tribe of Levi, indicating each person’s clan; count every male down to one month old.”