Ezra 6:19-22 - The Celebration Of Passover
19 And the children of the captivity held the passover upon the fourteenth of the first month. 20 For 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. 21 And 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 God of Israel, did eat; 22 and 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 God, the God of Israel.