1 Esdras 1:13-15

Revised Standard Version

¹³ and carried them to all the people. Afterward they prepared the passover for themselves and for their brethren the priests, the sons of Aaron, ¹⁴ because the priests were offering the fat until night; so the Levites prepared it for themselves and for their brethren the priests, the sons of Aaron. ¹⁵ And the temple singers, the sons of Asaph, were in their place according to the arrangement made by David, and also Asaph, Zechari′ah, and Eddinus, who represented the king.