The Passover sacrifice in the Temple had an exact choreography, and Targum Pseudo-Jonathan on Exodus 34:25 preserves its two ironclad rules. First: you may not slaughter the korban pesach while leaven still sits in your house. Second: no fat of the paschal offering may remain on the altar until morning.
The Targum reads these as simultaneous demands. The purging of leaven and the spilling of the sacrificial blood are woven together — the chametz must already be gone by the time the knife is drawn. A Jew cannot stand at the altar on the fourteenth of Nisan with a crust of yesterday's bread still hidden in his kitchen. The sacrifice would be invalidated by what he failed to sweep out.
The second rule, about the fat, speaks to the altar's momentum. The Passover fire must not grow cold. Whatever is set upon it must be consumed the same night — a detail the rabbis later used to define the outer edge of the seder meal itself, which must be completed before midnight.
There is a deeper pattern here. Passover is a holiday of thresholds: the leaven threshold, the midnight threshold, the threshold of the door marked with blood on the night of the tenth plague (Exodus 12:7). Every transition must be crisp. Nothing half-done, nothing smoldering, nothing leftover.
The takeaway: redemption in Jewish time is never slow. It moves at one speed — completion. The Passover altar teaches that anything worth offering is worth finishing before the sun comes up.