Numbers 3:13-15

New Catholic Bible

¹³ for every firstborn has belonged to me from the day that I slew all the firstborn in the land of Egypt. I have set apart all the firstborn as my own in Israel, both human and animal. They will be mine. I am the Lord.”

¹⁴ Counting the Levites. The Lord spoke to Moses in the Sinai Desert, saying, ¹⁵ “Count the sons of Levi by clan, by family. Count every male one month old and older.”