'Passover' in the Bible

The exiles observed the Passover on the fourteenth of the first month.

For the priests and the Levites had purified themselves together; all of them were pure. Then they slaughtered the Passover lamb for all the exiles, both for their brothers the priests and for themselves.

The sons of Israel who returned from exile and all those who had separated themselves from the impurity of the nations of the land to join them, to seek the Lord God of Israel, ate the Passover.