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
Marry and have sons and daughters; find wives for your sons and give your daughters in marriage, so that they too may have sons and daughters. Increase in number there; do not decrease.
NIV
Take wives and have sons and daughters; take wives for your sons and give your daughters in marriage, that they may bear sons and daughters; multiply there, and do not be diminished.
AMP
Take ye wives, and beget sons and daughters; and take wives for your sons, and give your daughters to husbands, that they may bear sons and daughters; that ye may be increased there, and not diminished.
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
