Ezra 6:18-20

Lexham English Bible

¹⁸ Then they set the priests in their divisions and the Levites in their sections for the work of God in Jerusalem, as it is written in the book of Moses.

The Celebration of Passover

¹⁹ On the fourteenth day of the first month the returned exiles observed the Passover feast. ²⁰ For the priests and Levites together had consecrated themselves; all of them were clean. And they slaughtered the Passover sacrifice for all of the returned exiles, for their brothers the priests, and for themselves.