1 Esdras 1:13-15

New Revised Standard Version, Anglicised

¹³ and carried them to all the people. Afterwards they prepared the passover for themselves and for their kindred the priests, the sons of Aaron, ¹⁴ because the priests were offering the fat until nightfall; so the Levites prepared it for themselves and for their kindred the priests, the sons of Aaron. ¹⁵ The temple singers, the sons of Asaph, were in their place according to the arrangement made by David, and also Asaph, Zechariah, and Eddinus, who represented the king.