Then he must bring his guilt offering to the Lord, a flawless ram from the flock, convertible into silver shekels, ¹  for a guilt offering to the priest.

“When a person commits a trespass ¹  and sins by straying unintentionally ²  from the regulations about the Lord’s holy things, ³  then he must bring his penalty for guilt ⁴  to the Lord, a flawless ram from the flock, convertible into silver shekels according to the standard of the sanctuary shekel, ⁵  for a guilt offering. ⁶ 

and must bring a flawless ram from the flock, convertible into silver shekels, ¹  for a guilt offering to the priest. So the priest will make atonement ²  on his behalf for his error which he committed ³  (although he himself had not known it) and he will be forgiven. ⁴