Numbers 26:60-62

Amplified Bible

⁶⁰ To Aaron were born Nadab, Abihu, Eleazar, and Ithamar. ⁶¹ But Nadab and Abihu died [in the presence of God] when they offered [in their ceremonial censers] strange [unholy, unacceptable, unauthorized] fire before the Lord.^{(A) 62} Those numbered of the Levites were 23,000, every male from a month old and upward; for they were not numbered among the sons of Israel, since no inheritance [of land] was given to them among the Israelites.