Leviticus 5:18

18 For a guilt offering, you must bring to the priest your own ram with no defects, or you may buy one of equal value. Through this process the priest will purify you from your unintentional sin, making you right with the LORD, and you will be forgiven.

Leviticus 5:18 Meaning and Commentary

Leviticus 5:18

And he shall bring a ram without blemish out of the flock,
&c.] (See Gill on Leviticus 5:15)

with thy estimation for a trespass [offering] to the priest;
along with the offering was to be brought an estimate of whatsoever damage had been done through the breach of any of the commands of God, where damage could take place, that so recompense be made as before directed; or else the ram brought was to be valued, and examined whether it was worth two shekels of silver, as before explained, (See Gill on Leviticus 5:15) but no fifth was required as in the former cases:

and the priest shall make atonement for him concerning his
ignorance wherein he erred, and wist [it] not, and it shall be
forgiven him; (See Gill on Leviticus 5:10) this is what the Jews call "Asham Talui", doubtful trespass offering.

Leviticus 5:18 In-Context

16 You must make restitution for the sacred property you have harmed by paying for the loss, plus an additional 20 percent. When you give the payment to the priest, he will purify you with the ram sacrificed as a guilt offering, making you right with the LORD, and you will be forgiven.

17 “Suppose you sin by violating one of the LORD ’s commands. Even if you are unaware of what you have done, you are guilty and will be punished for your sin.

18 For a guilt offering, you must bring to the priest your own ram with no defects, or you may buy one of equal value. Through this process the priest will purify you from your unintentional sin, making you right with the LORD, and you will be forgiven.

19 This is a guilt offering, for you have been guilty of an offense against the LORD .”