On the fourteenth day of the second month, one month later than usual, the people slaughtered the Passover lamb. This shamed the priests and Levites, so they purified themselves and brought burnt offerings to the Temple of the Lord.
Then Josiah announced that the Passover of the Lord would be celebrated in Jerusalem, and so the Passover lamb was slaughtered on the fourteenth day of the first month.
If that had been necessary, Christ would have had to die again and again, ever since the world began. But now, once for all time, he has appeared at the end of the age to remove sin by his own death as a sacrifice.