Imamat 10:6

10:6 Then Moses said to Aaron and to Eleazar and Ithamar his other two sons, “Do not ¹  dishevel the hair of your heads ²  and do not tear your garments, so that you do not die and so that wrath does not come on the whole congregation. Your brothers, all the house of Israel, are to mourn the burning which the Lord has caused, ³ 

Imamat 10:12

Perpetual Statutes Moses spoke to Aaron

10:12 Then Moses spoke to Aaron and to Eleazar and Ithamar, his remaining sons, “Take the grain offering which remains from the gifts of the Lord and eat it unleavened beside the altar, for it is most holy.

Bilangan 4:28

4:28 This is the service of the families of the Gershonites concerning the tent of meeting. Their responsibilities will be under the authority ⁴  of Ithamar son of Aaron the priest. ⁵ 

[10:6]  ¹ tc Smr has “you must not” (לֹא, lo’) rather than the MT’s “do not” (אַל, ’al; cf. the following negative לֹא, lo’, in the MT).

[10:6]  ² tn Heb “do not let free your heads.” Some have taken this to mean, “do not take off your headgear” (cf. NAB, NASB), but it probably also involves leaving one’s hair unkempt as a sign of mourning (see J. Milgrom, Leviticus [AB], 1:608-9; cf. NCV, TEV, CEV, NLT).

[10:6]  ³ tn Heb “shall weep [for] the burning which the Lord has burned”; NIV “may mourn for those the Lord has destroyed by fire.”

[4:28]  ⁴ tn Or “the direction” (NASB, TEV); Heb “under/by the hand of.” The word “hand” is often used idiomatically for “power” or “authority.” So also in vv. 33, 37, 45, 48.

[4:28]  ⁵ sn The material here suggests that Eleazar had heavier responsibilities than Ithamar, Aaron’s fourth and youngest son. It is the first indication that the Zadokite Levites would take precedence over the Ithamar Levites (see 1 Chr 24:3-6).