But the priests, the Levites, the sons of Zadok, that kept charge of my sanctuary when the children of Israel went astray from me, they shall come near to me to minister unto me, and they shall stand before me to offer unto me the fat and the blood, says the Lord GOD:
Read Chapter 44
George Leo Haydock
And Levites, of the higher order. (Haydock)
No simple Levites were of this family. It enjoyed the high priesthood form the time of Solomon.