Passage cross-references.

And he appointed, according to the order of David his father, the courses of the priests to their service, and the Levites to their charges, to praise and minister before the priests, as the duty of every day required: the porters also by their courses at every gate: for so had David the man of God commanded.

And he set the Levites in the house of the LORD with cymbals, with psalteries, and with harps, according to the commandment of David, and of Gad the king’s seer, and Nathan the prophet: for so was the commandment of the LORD by his prophets. …

As well the singers as the players on instruments shall be there: all my springs are in thee.

That chant to the sound of the viol, and invent to themselves instruments of musick, like David;

And the king made of the almug trees pillars for the house of the LORD, and for the king’s house, harps also and psalteries for singers: there came no such almug trees, nor were seen unto this day.

And these are they whom David set over the service of song in the house of the LORD, after that the ark had rest. …

And the porters were, Shallum, and Akkub, and Talmon, and Ahiman, and their brethren: Shallum was the chief; …

And these are the singers, chief of the fathers of the Levites, who remaining in the chambers were free: for they were employed in that work day and night.

And David spake to the chief of the Levites to appoint their brethren to be the singers with instruments of musick, psalteries and harps and cymbals, sounding, by lifting up the voice with joy. …

And Obededom with their brethren, threescore and eight; Obededom also the son of Jeduthun and Hosah to be porters:

And with them Heman and Jeduthun, and the rest that were chosen, who were expressed by name, to give thanks to the LORD, because his mercy endureth for ever; …

Moreover David and the captains of the host separated to the service of the sons of Asaph, and of Heman, and of Jeduthun, who should prophesy with harps, with psalteries, and with cymbals: and the number of the workmen according to their service was: …

Concerning the divisions of the porters: Of the Korhites was Meshelemiah the son of Kore, of the sons of Asaph. …

And the Levites, of the children of the Kohathites, and of the children of the Korhites, stood up to praise the LORD God of Israel with a loud voice on high. …

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.

And there went up some of the children of Israel, and of the priests, and the Levites, and the singers, and the porters, and the Nethinims, unto Jerusalem, in the seventh year of Artaxerxes the king.

So the priests, and the Levites, and the porters, and the singers, and some of the people, and the Nethinims, and all Israel, dwelt in their cities; and when the seventh month came, the children of Israel were in their cities.