Ezra 6:20-21

20For the priests and the Levites were purified together, all of them were pure, and they killed the passover for all the children of the captivity, and for their brethren the priests, and for themselves. 21And the children of Israel, who had returned from captivity, and all such as had separated themselves to them from the filthiness of the heathen of the land, to seek the LORD God of Israel, ate,