What is the burnt offering in the Bible?

The burnt offering is the sacrifice that goes up in smoke — completely, with nothing kept back for the worshiper to eat.

Its Hebrew name says so directly. Olah (עֹלָה) is built on the verb alah, "to go up, to ascend." It is named for what happens to it: the smoke rises off the altar and carries the whole animal skyward. This word is not rare — it appears 287 times in 261 verses across the Hebrew Bible, concentrated exactly where you would expect, in the Torah's sacrificial law and the wilderness offerings.

What makes the burnt offering different from every other sacrifice in Leviticus is that single fact of totality. In the peace offering, the worshiper eats a portion of the meat. In the grain offering, the priests take their share. In the burnt offering, nothing comes back — the whole animal belongs to God. Leviticus says it plainly for the herd and flock offerings: the priest burns אֶת־הַכֹּל, "the whole," on the altar (Leviticus 1:9, 1:13). For the bird offering the wording changes slightly but the point does not — "he shall turn it into smoke on the altar" (Leviticus 1:17). (Two small exceptions keep the picture honest: the bird's crop is removed first, and the hide of a herd or flock animal goes to the priest — so it isn't that literally every particle burns, but that no meat returns to the offerer's table.)

The completeness mattered enough that Hebrew kept a separate word just to name it: kalil (כָּלִיל), "whole, entire." It shows up beside olah in only two places in the whole Bible — Samuel's lamb, offered "as a whole burnt offering" as the Philistines advanced (1 Samuel 7:9), and a heart wholly surrendered to God, called a "whole burnt offering" in the Psalms:

The sacrifices of God are a broken spirit; a broken and contrite heart, O God, you will not despise... then you will delight in right sacrifices, in burnt offerings and whole burnt offerings. — Psalm 51:17, 19

Leviticus 1 lays out three grades of the burnt offering — a bull from the herd, a sheep or goat from the flock, or a turtledove or young pigeon for those who could not afford larger stock (compare Leviticus 5:7). The animal changes with what a person could bring, but the offering itself, in every grade, is given up entirely. Nothing is priced back to the giver.

That total giving is the whole shape of the olah: a gift that goes up and does not come down. Leviticus 1 will go on to say what that gift accomplishes for the one who brings it — acceptance, atonement, a pleasing aroma to the Lord — and the full study on the burnt offering walks through each of those in turn, alongside the Hebrew and Greek text itself.