33-38. Here is a list of these musicians and their family lines:Heman from the Kohathite clan was the director. His ancestors went all the way back to Jacob and included Joel, Samuel, Elkanah, Jeroham, Eliel, Toah, Zuph, Elkanah, Mahath, Amasai, Elkanah, Joel, Azariah, Zephaniah, Tahath, Assir, Ebiasaph, Korah, Izhar, Kohath, Levi.
39-43. Asaph was Heman's relative and served as his assistant. Asaph's ancestors included Berechiah, Shimea, Michael, Baaseiah, Malchijah, Ethni, Zerah, Adaiah, Ethan, Zimmah, Shimei, Jahath, Gershon, and Levi.
44-47. Ethan was also Heman's relative and served as his assistant. Ethan belonged to the Merari clan, and his ancestors included Kishi, Abdi, Malluch, Hashabiah, Amaziah, Hilkiah, Amzi, Bani, Shemer, Mahli, Mushi, Merari, and Levi.
48. The rest of the Levites were appointed to work at the sacred tent.
49. Only Aaron and his descendants were allowed to offer sacrifices and incense on the two altars at the sacred tent. They were in charge of the most holy place and the ceremonies to forgive sins, just as God's servant Moses had commanded.