And he shall bring his trespass-offering to the LORD, a ram without blemish out of the flock, with thy estimation, for a trespass-offering, to the priest: Verse ConceptsRamsPerfect Sacrifices

Likewise this is the law of the trespass-offering: it is most holy. Verse ConceptsAaron, Priestly ResponsibilitiesHoliness, As Set Apart For God

And he shall make amends for the harm that he hath done in the holy thing, and shall add to it the fifth part, and give it to the priest: and the priest shall make an atonement for him with the ram of the trespass-offering, and it shall be forgiven him. And if a soul shall sin, and commit any of these things which are forbidden to be done by the commandments of the LORD; though he knew it not, yet is he guilty, and shall bear his iniquity. And he shall bring a ram without blemish out of the flock, with thy estimation, for a trespass-offering to the priest; and the priest shall make an atonement for him concerning his ignorance wherein he erred and knew it not, and it shall be forgiven him. read more.
It is a trespass-offering: he hath certainly trespassed against the LORD.