Numbers 3:14-16

American Standard Version

¹⁴ And Jehovah spake unto Moses in the wilderness of Sinai, saying, ¹⁵ Number the children of Levi by their fathers’ houses, by their families: every male from a month old and upward shalt thou number them. ¹⁶ And Moses numbered them according to the word of Jehovah, as he was commanded.