2 Chronicles 35:15

The singers, the descendants of Asaph, were at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer. Also, the gatekeepers were at each gate. None of them left their tasks because their Levite brothers had made preparations for them.

1 Chronicles 9:17-19

The gatekeepers: Shallum, Akkub, Talmon, Ahiman, and their relatives.
Shallum was their chief;

1 Chronicles 25:1-7

David and the officers of the army also set apart some of the sons of Asaph, Heman, and Jeduthun, who were to prophesy accompanied by lyres, harps, and cymbals. This is the list of the men who performed their service:

1 Chronicles 26:12-19

These divisions of the gatekeepers, under their leading men, had duties for ministering in the Lord’s temple, just as their brothers did.

1 Chronicles 16:41-42

With them were Heman, Jeduthun, and the rest who were chosen and designated by name to give thanks to the Lord—for His faithful love endures forever.

1 Chronicles 23:5

4,000 are to be gatekeepers, and 4,000 are to praise the Lord with the instruments that I have made for worship.”

2 Chronicles 29:25-26

Hezekiah stationed the Levites in the Lord’s temple with cymbals, harps, and lyres according to the command of David, Gad the king’s seer, and Nathan the prophet. For the command was from the Lord through His prophets.

Psalm 77:1

For the choir director: according to Jeduthun. Of Asaph. A psalm.I cry aloud to God,
aloud to God, and He will hear me.

Psalm 78:1

A Maskil of Asaph.My people, hear my instruction;
listen to what I say.

Psalm 79:1

A psalm of Asaph.God, the nations have invaded Your inheritance,
desecrated Your holy temple,
and turned Jerusalem into ruins.

Treasury of Scripture Knowledge

Summary

2 Chronicles 35:15

And the singers the sons of Asaph were in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king's seer; and the porters waited at every gate; they might not depart from their service; for their brethren the Levites prepared for them.

The porters

1 Chronicles 9:17

1 Chronicles 26:14

Bible References

The porters

The gatekeepers: Shallum, Akkub, Talmon, Ahiman, and their relatives.
Shallum was their chief;

The lot for the east gate fell to Shelemiah. They also cast lots for his son Zechariah, an insightful counselor, and his lot came out for the north gate.