1 Chronicles 23:6
Then David divided the Levites into divisions according to the sons of Levi: Gershom, Kohath, and Merari.

1 Chronicles 6:31-32
These are the men David put in charge of the music in the house of the LORD after the ark rested there. / They ministered with song before the tabernacle, the Tent of Meeting, until Solomon built the house of the LORD in Jerusalem. And they performed their duties according to the regulations given them.

1 Chronicles 25:1
Additionally, David and the commanders of the army set apart some of the sons of Asaph, Heman, and Jeduthun to prophesy with the accompaniment of lyres, harps, and cymbals. The following is the list of the men who performed this service:

1 Chronicles 9:10-13
From the priests: Jedaiah, Jehoiarib, and Jachin; / Azariah son of Hilkiah, the son of Meshullam, the son of Zadok, the son of Meraioth, the son of Ahitub, the chief official of God’s temple; / Adaiah son of Jeroham, the son of Pashhur, the son of Malchijah; Maasai son of Adiel, the son of Jahzerah, the son of Meshullam, the son of Meshillemith, the son of Immer; ...

2 Chronicles 8:14
In keeping with the ordinances of his father David, Solomon appointed the divisions of the priests over their service, and the Levites for their duties to offer praise and to minister before the priests according to the daily requirement. He also appointed gatekeepers by their divisions at each gate, for this had been the command of David, the man of God.

2 Chronicles 31:2
Hezekiah reestablished the divisions of the priests and Levites—each of them according to their duties as priests or Levites—for the burnt offerings and peace offerings, for ministry, for giving thanks, and for singing praises at the gates of the LORD’s dwelling.

Nehemiah 12:1
Now these are the priests and Levites who went up with Zerubbabel son of Shealtiel and with Jeshua: Seraiah, Jeremiah, Ezra,

Nehemiah 12:24
The leaders of the Levites were Hashabiah, Sherebiah, and Jeshua son of Kadmiel, along with their associates, who stood across from them to give praise and thanksgiving as one section alternated with the other, as prescribed by David the man of God.

Nehemiah 12:45-46
They performed the service of their God and the service of purification, along with the singers and gatekeepers, as David and his son Solomon had prescribed. / For long ago, in the days of David and Asaph, there were directors for the singers and for the songs of praise and thanksgiving to God.

Ezra 6:18
They also appointed the priests by their divisions and the Levites by their groups to the service of God in Jerusalem, according to what is written in the Book of Moses.

Exodus 28:1
“Next, have your brother Aaron brought to you from among the Israelites, along with his sons Nadab, Abihu, Eleazar, and Ithamar, to serve Me as priests.

Numbers 3:5-10
Then the LORD said to Moses, / “Bring the tribe of Levi and present them to Aaron the priest to assist him. / They are to perform duties for him and for the whole congregation before the Tent of Meeting, attending to the service of the tabernacle. ...

Numbers 18:1-7
So the LORD said to Aaron, “You and your sons and your father’s house must bear the iniquity involving the sanctuary. And you and your sons alone must bear the iniquity involving your priesthood. / But bring with you also your brothers from the tribe of Levi, the tribe of your father, that they may join you and assist you and your sons before the Tent of the Testimony. / And they shall attend to your duties and to all the duties of the Tent; but they must not come near to the furnishings of the sanctuary or the altar, or both they and you will die. ...

1 Samuel 2:28
And out of all the tribes of Israel I selected your father to be My priest, to offer sacrifices on My altar, to burn incense, and to wear an ephod in My presence. I also gave to the house of your father all the food offerings of the Israelites.

Hebrews 7:11
Now if perfection could have been attained through the Levitical priesthood (for on this basis the people received the law), why was there still need for another priest to appear—one in the order of Melchizedek and not in the order of Aaron?