What does Leviticus 5:18 mean?

And he shall bring a ram without blemish out of the flock, according to thy estimation, for a trespass-offering, unto the priest; and the priest shall make atonement for him concerning the thing wherein he erred unwittingly and knew it not, and he shall be forgiven.

And he shall bring a ram without blemish out of the flock, with thy estimation, for a trespass offering, unto the priest: and the priest shall make an atonement for him concerning his ignorance wherein he erred and wist it not, and it shall be forgiven him.

And he shall bring a ram without blemish out of the flock, according to thy estimation, for a trespass-offering, unto the priest; and the priest shall make atonement for him concerning the thing wherein he erred unwittingly and knew it not, and he shall be forgiven.

Let him come to the priest with a sheep, a male without any mark out of the flock, of the value fixed by you, as an offering for his error; and the priest will take away the sin which he did in error, and he will have forgiveness.

`Then he hath brought in a ram, a perfect one, out of the flock, at thy valuation, for a guilt-offering, unto the priest; and the priest hath made atonement for him, for his ignorance in which he hath erred and he hath not known, and it hath been forgiven him;

He shall offer of the flocks a ram without blemish to the priest, according to the measure and estimation of the sin. And the priest shall pray for him, because he did it ignorantly: And it shall be forgiven him,

And he shall bring a ram without blemish out of the small cattle, according to thy valuation, as trespass-offering, unto the priest; and the priest shall make atonement for him concerning his inadvertence wherein he sinned inadvertently, and knew [it] not, and it shall be forgiven him.