1 Esdras 7:10–13
10 The people of Israel who came from exile kept the passover on the fourteenth day of the first month, after the priests and the Levites were purified together. 11 Not all of the returned captives were purified, but the Levites were all purified together,a 12 and they sacrificed the passover lamb for all the returned captives and for their kindred the priests and for themselves. 13 The people of Israel who had returned from exile ate it, all those who had separated themselves from the abominations of the peoples of the land and sought the Lord.