9
Assign the L'vi'im to Aharon and his sons; their one responsibility in regard to the people of Isra'el is to serve him.
10
You are to appoint Aharon and his sons to carry out the duties of cohanim; anyone else who involves himself is to be put to death."
12
"I have taken the L'vi'im from among the people of Isra'el in lieu of every firstborn male that is first from the womb among the people of Isra'el; the L'vi'im are to be mine.
13
All the firstborn males belong to me, because on the day that I killed all the firstborn males in the land of Egypt, I separated for myself all the firstborn males in Isra'el, both human and animal. They are mine; I am ADONAI."