The sons of Amram: Aaron and Moses. Aaron was set apart, he and his descendants forever, to consecrate the most holy things, to offer sacrifices before the LORD, to minister before him and to pronounce blessings in his name forever.
NIV
The sons of Amram: Aaron and Moses. Aaron was set apart to sanctify him as most holy and to consecrate the most holy things, that he and his sons forever might burn incense before the Lord, minister to Him, and bless in His name [and the character which that name denotes] forever.
AMP
The sons of Amram; Aaron and Moses: and Aaron was separated, that he should sanctify the most holy things, he and his sons for ever, to burn incense before the LORD, to minister unto him, and to bless in his name for ever.
KJV
They are to join you and be responsible for the care of the tent of meeting – all the work at the tent – and no one else may come near where you are.
NIV
And they shall be joined to you and attend to the duties of the Tent of Meeting--all the [menial] service of the Tent--and no stranger [no layman, anyone who is not a Levite] shall come near you [Aaron and your sons].
AMP
And they shall be joined unto thee, and keep the charge of the tabernacle of the congregation, for all the service of the tabernacle: and a stranger shall not come nigh unto you.
KJV
He said of his father and mother, "I have no regard for them.' He did not recognize his brothers or acknowledge his own children, but he watched over your word and guarded your covenant."
NIV
[Aaron] who said of his father and mother, I do not regard them; nor did he acknowledge his brothers or openly recognize his own children. For the priests observed Your word and kept Your covenant [as to their limitations].
AMP
Who said unto his father and to his mother, I have not seen him; neither did he acknowledge his brethren, nor knew his own children: for they have observed thy word, and kept thy covenant.
KJV
"But only you and your sons may serve as priests in connection with everything at the altar and inside the curtain. I am giving you the service of the priesthood as a gift. Anyone else who comes near the sanctuary is to be put to death."
NIV
Therefore you and your sons with you shall attend to your priesthood for everything of the altar [of burnt offering and the altar of incense] and [of the Holy of Holies] within the veil, and you shall serve. I give you your priesthood as a service of gift. And the stranger [anyone other than Moses or your sons, Aaron] who comes near shall be put to death. [Exod. 40:18, 20, 26.]AMP
Therefore thou and thy sons with thee shall keep your priest's office for everything of the altar, and within the vail; and ye shall serve: I have given your priest's office unto you as a service of gift: and the stranger that cometh nigh shall be put to death.
KJV
"Bring the bull to the front of the tent of meeting, and Aaron and his sons shall lay their hands on its head."
NIV
Then bring the bull before the Tent of Meeting, and Aaron and his sons shall lay their hands upon its head.
AMP
And thou shalt cause a bullock to be brought before the tabernacle of the congregation: and Aaron and his sons shall put their hands upon the head of the bullock.
KJV
They brought seven bulls, seven rams, seven male lambs and seven male goats as a sin offering for the kingdom, for the sanctuary and for Judah. The king commanded the priests, the descendants of Aaron, to offer these on the altar of the LORD.
NIV
They brought seven each of bulls, rams, lambs, and he-goats for a sin offering for the kingdom, the sanctuary, and Judah. He commanded the priests, the sons of Aaron, to offer them on the Lord's altar.
AMP
And they brought seven bullocks, and seven rams, and seven lambs, and seven he goats, for a sin offering for the kingdom, and for the sanctuary, and for Judah. And he commanded the priests the sons of Aaron to offer them on the altar of the LORD.
KJV