Deuteronomy 21:5
Then the priests, the sons of Levi, shall come near. Jehovah your God has chosen them to serve him and to bless in the name of Jehovah. They will settle every dispute and every assault.
1 Chronicles 23:13
The sons of Amram: Aaron and Moses. Aaron was set apart, he and his descendants from generation to generation, to consecrate the most holy things, to offer sacrifices before Jehovah, to minister before him and to pronounce blessings in his name as long as they live.
Deuteronomy 10:8
Jehovah then set apart the tribe of Levi to carry the Ark of the covenant of Jehovah. They were to stand before Jehovah to serve and pronounce blessings in his name until this day.
Numbers 6:22-27
Jehovah said to Moses:
Deuteronomy 17:8-12
If any case is too difficult for you to decide, between one kind of homicide or another, between one kind of lawsuit or another, and between one kind of assault or another, being cases of dispute in your courts, then you should go to the place Jehovah your God chooses.
Deuteronomy 18:5
Jehovah chose from all your tribes the tribe of Levi to serve him and his sons as priests forever.
Deuteronomy 19:17
The two people involved must stand in Jehovah's presence, in front of the priests and judges who are serving at that time.
Malachi 2:7
The priests should teach the true knowledge of God. They are the messengers of Jehovah of Hosts. Therefore the people should learn (my will) the law from them.