Do Not Leave the Passover Offering Fat Until Morning
The Altar Must Not Wait — Completing the Sacred Service Before Dawn
Exodus 23:18: “You shall not offer the blood of my sacrifice with anything leavened, or let the fat of my feast remain until the morning.” The verse links two prohibitions in a single breath: the chametz prohibition (#469) and the overnight-fat prohibition (#470). The connection is not accidental — both speak to the urgency of Passover night. The offering must be brought into a chametz-free space (no leaven present), and the altar service must be fully completed before dawn (no fat left overnight). The entire Passover event — from slaughter to altar completion — must be accomplished within the boundaries of the sacred night.
The parallel in Exodus 12:10: “Let nothing of it remain until morning; that which remains until morning you shall burn with fire.” That verse addresses the meat portions eaten by the household. Commandment #470 addresses the altar portions offered by the priests. Both share the same deadline: dawn. The Passover night is self-contained — it begins and ends in darkness, with everything completed before the new day’s light.
Fat as God’s Portion — Why the Altar Must Receive Its Due That Night
The chelev (fat) is God’s portion. Leviticus 7:23: “Speak to the people of Israel, saying, You shall eat no fat, of ox or sheep or goat.” The fat designated for the altar was set apart from human consumption not merely by prohibition but by purpose: it was given to God as the altar’s portion. The commandment that this portion must be on the altar and burning before morning reflects the same logic as the Notar prohibition: sacred portions cannot be deferred indefinitely. The fat that belongs to God on Passover night belongs to God that night — it cannot be left until morning as if the sacred moment extended without limit.
The Passover night is a defined sacred event. Exodus 12:42: “It is a night of watching unto the LORD for bringing them out of the land of Egypt; this same night is a night of watching unto the LORD for all the people of Israel throughout their generations.” The night has its own sacred boundaries. Everything that belongs to Passover night — the meal, the altar service, the fat portions — must be completed within those boundaries. Allowing the fat to remain until morning would carry a piece of the sacred night past its proper limits.
Urgency as Theology — Why Passover Cannot Be Leisurely
Multiple Passover laws enforce urgency: eat standing, with your sandals on, with your staff in hand (Exodus 12:11); eat quickly because you are leaving in haste (Exodus 12:39); burn what remains before morning; complete the altar service before dawn. The urgency is not merely historical commemoration — it is built into the structure of the observance. Passover night is not a leisurely celebration to be stretched out; it is a sacred boundary that demands its tasks be done within it.
The prohibition on leaving the fat until morning mirrors the prohibition on eating the Passover meat after dawn: both enforce the same theological point. The Passover event belongs to the night of redemption, and everything associated with it must be completed within that night. What remains undone at dawn has, in a sense, missed the moment. The Torah’s insistence on completion within the night preserves the integrity of the Passover event as a single, bounded, urgent act of sacred observance.
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