Deuteronomy 21:5
Then the Levitical priests will approach (for the Lord your God has chosen them to serve him and to pronounce blessings in his name, and to decide every judicial verdict)
1 Chronicles 23:13
The sons of Amram: Aaron and Moses. Aaron and his descendants were chosen on a permanent basis to consecrate the most holy items, to offer sacrifices before the Lord, to serve him, and to praise his name.
Deuteronomy 10:8
At that time the Lord set apart the tribe of Levi to carry the ark of the Lord's covenant, to stand before the Lord to serve him, and to formulate blessings in his name, as they do to this very day.
Numbers 6:22-27
The Lord spoke to Moses:
Deuteronomy 17:8-12
If a matter is too difficult for you to judge -- bloodshed, legal claim, or assault -- matters of controversy in your villages -- you must leave there and go up to the place the Lord your God chooses.
Deuteronomy 18:5
For the Lord your God has chosen them and their sons from all your tribes to stand and serve in his name permanently.
Deuteronomy 19:17
then both parties to the controversy must stand before the Lord, that is, before the priests and judges who will be in office in those days.
Malachi 2:7
For the lips of a priest should preserve knowledge of sacred things, and people should seek instruction from him because he is the messenger of the Lord who rules over all.