Then he shall bring to the priest his guilt offering to the Lord, a ram without blemish from the flock, as valued by you, as a guilt offering. Verse ConceptsRamsPerfect Sacrifices

‘This is the law of the guilt offering; it is most holy. Verse ConceptsAaron, Priestly ResponsibilitiesHoliness, As Set Apart For God

And he shall make restitution for what he has done amiss in the holy thing, and shall add a fifth to it, and give it to the priest; and the priest shall make atonement for him with the ram of the trespass or guilt offering, and he shall be forgiven. If anyone sins and does any of the things the Lord has forbidden, though he was not aware of it, yet he is guilty and shall bear his iniquity. He shall bring [to the priest] a ram without blemish out of the flock, estimated by you to the amount [of the trespass], for a guilt or trespass offering; and the priest shall make atonement for him for the error which he committed unknowingly, and he shall be forgiven. read more.
It is a trespass or guilt offering; he is certainly guilty before the Lord.