1 Esdras 7:8-10

Revised Standard Version

⁸ and twelve he-goats for the sin of all Israel, according to the number of the twelve leaders of the tribes of Israel; ⁹ and the priests and the Levites stood arrayed in their garments, according to kindred, for the services of the Lord God of Israel in accordance with the book of Moses; and the gatekeepers were at each gate.

The Passover

¹⁰ The people of Israel who came from the captivity kept the passover on the fourteenth day of the first month, after the priests and the Levites were purified together.