Passover: Observation of, Renewed: After the Return from Babylonian Captivity
Source: Nav
Ezra 6:19, 20
On the fourteenth day of the first month, the exiles kept the Passover. / All the priests and Levites had purified themselves and were ceremonially clean. And the Levites slaughtered the Passover lamb for all the exiles, for their priestly brothers, and for themselves.