Ezra 6:18-20

Revised Standard Version

¹⁸ And they set the priests in their divisions and the Levites in their courses, for the service of God at Jerusalem, as it is written in the book of Moses.

The Passover Celebrated

¹⁹ On the fourteenth day of the first month the returned exiles kept the passover. ²⁰ For the priests and the Levites had purified themselves together; all of them were clean. So they killed the passover lamb for all the returned exiles, for their fellow priests, and for themselves;