And Aaron lifted up his hand toward the people, and blessed them, and came down from offering of the sin offering, and the burnt offering, and peace offerings.
The sons of Amram; Aaron and Moses: and Aaron was separated, that he should purify the most holy things, he and his sons for ever, to burn incense before Yahweh, to minister unto him, and to bless in his name for ever.
At that time Yahweh separated the tribe of Levi, to bear the ark of the covenant of Yahweh, to stand before Yahweh to minister unto him, and to bless in his name, unto this day.
And the priests the sons of Levi shall come near; for them Yahweh thy Elohim hath chosen to minister unto him, and to bless in the name of Yahweh; and by their word shall every controversy and every stroke be tried:
Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.