Ezra 6:19-22

19And the children of the captivity held the passover upon the fourteenth of the first month. 20For the priests and the Levites had purified themselves as one [man]: they were all 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 that were come back out of captivity, and all such as had separated themselves to them from the filthiness of the nations of the land, to seek Jehovah the 1God of Israel, did eat; 22and they kept the feast of unleavened bread seven days with joy; for Jehovah had made them joyful, and turned the heart of the king of Assyria to them, to strengthen their hands in the work of the house of 2God, the 3God of Israel.