Numbers 3:5-13 - The Assignment Of The Levites

5 And Jehovah will speak to Moses, saying, 6 Bring near the tribe of Levi, and make it stand before Aaron the priest; and they served him. 7 And they watched his watches, and the watches of all the assembly before the tent of appointment to do the work of the dwelling. 8 And they shall watch all the vessels of the tent of appointment, and the watches of the sons of Israel, to do the work of the dwelling. 9 And give the Levites to Aaron and to his sons; being given they were given to him from the sons of Israel. 10 And Aaron and his sons thou shalt set up, and they shall watch their priesthood; and the stranger coming near shall die.

11 And Jehovah will speak to Moses, saying, 12 And I, behold, I took the Levites from the midst of the sons of Israel, instead of all the first-born cleaving the womb from the sons of Israel: and the Levites were to me. 13 For to me all the first-born: in the day I struck all the first-born in the land of Egypt, I consecrated to me every first-born in Israel, from man to cattle: to me they shall be: I am Jehovah.