But his inwards and his legs shall he wash in water: and the priest shall burn all on the altar, to be a burnt sacrifice, an offering made by fire, of a sweet savour unto the LORD.
But his inward ... This part of the ceremony was symbolical of the inward purity and the holy walk that became acceptable worshippers.
A sweet savour unto the Lord - is an expression of the offerer's piety, but especially as a sacrificial type of Christ.