1 Chronicles 25:3

Of Jeduthun; the sons of Jeduthun: Gedaliah, and Zeri, and Jeshaiah, Hashabiah, and Mattithiah, six, under the hands of their father Jeduthun with the harp, who prophesied in giving thanks and praising Yahweh.

1 Chronicles 16:41-42

and with them Heman and Jeduthun, and the rest who were chosen, who were mentioned by name, to give thanks to Yahweh, because his loving kindness endures forever;

1 Chronicles 9:16

and Obadiah the son of Shemaiah, the son of Galal, the son of Jeduthun, and Berechiah the son of Asa, the son of Elkanah, who lived in the villages of the Netophathites.

1 Chronicles 15:18

and with them their brothers of the second degree, Zechariah, Ben, and Jaaziel, and Shemiramoth, and Jehiel, and Unni, Eliab, and Benaiah, and Maaseiah, and Mattithiah, and Eliphelehu, and Mikneiah, and Obed-Edom, and Jeiel, the doorkeepers.

1 Chronicles 15:21

and Mattithiah, and Eliphelehu, and Mikneiah, and Obed-Edom, and Jeiel, and Azaziah, with harps tuned to the eight-stringed lyre, to lead.

1 Chronicles 25:21

for the fourteenth, Mattithiah, his sons and his brothers, twelve:

2 Chronicles 29:14

and of the sons of Heman, Jehuel and Shimei; and of the sons of Jeduthun, Shemaiah and Uzziel.

Psalm 92:1

It is a good thing to give thanks to Yahweh, to sing praises to your name, Most High;

Jeremiah 33:11

the voice of joy and the voice of gladness, the voice of the bridegroom and the voice of the bride, the voice of those who say, Give thanks to Yahweh of Armies, for Yahweh is good, for his loving kindness endures forever; [and of them] who bring [sacrifices of] thanksgiving into the house of Yahweh. For I will cause the captivity of the land to return as at the first, says Yahweh.

Treasury of Scripture Knowledge

Summary

Of Jeduthun: the sons of Jeduthun; Gedaliah, and Zeri, and Jeshaiah, Hashabiah, and Mattithiah, six, under the hands of their father Jeduthun, who prophesied with a harp, to give thanks and to praise the LORD.

General references

Bible References

Gedaliah

1 Chronicles 25:9
Now the first lot came forth for Asaph to Joseph: the second to Gedaliah; he and his brothers and sons were twelve:

Jeshaiah

1 Chronicles 25:15
the eighth to Jeshaiah, his sons and his brothers, twelve:

Mattithiah

1 Chronicles 25:21
for the fourteenth, Mattithiah, his sons and his brothers, twelve:
1 Chronicles 15:18
and with them their brothers of the second degree, Zechariah, Ben, and Jaaziel, and Shemiramoth, and Jehiel, and Unni, Eliab, and Benaiah, and Maaseiah, and Mattithiah, and Eliphelehu, and Mikneiah, and Obed-Edom, and Jeiel, the doorkeepers.

General references

Numbers 3:20
The sons of Merari by their families: Mahli and Mushi. These are the families of the Levites according to their fathers' houses.
Psalm 98:5
Sing praises to Yahweh with the harp, with the harp and the voice of melody.